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63624431 = 1331157877
BaseRepresentation
bin1111001010110…
…1010011101111
311102201110022102
43302231103233
5112241440211
610151405315
71401540653
oct362552357
9142643272
1063624431
1132a06a82
121938383b
13102488c0
148642a63
1558bba3b

63624431 has 8 divisors (see below), whose sum is σ = 70729344. Its totient is φ = 56835360.

The previous prime is 63624419. The next prime is 63624437. The reversal of 63624431 is 13442636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63624431 - 214 = 63608047 is a prime.

It is a super-2 number, since 2×636244312 = 8096136440147522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63624394 and 63624403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63624437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78536 + ... + 79341.

It is an arithmetic number, because the mean of its divisors is an integer number (8841168).

Almost surely, 263624431 is an apocalyptic number.

63624431 is a deficient number, since it is larger than the sum of its proper divisors (7104913).

63624431 is a wasteful number, since it uses less digits than its factorization.

63624431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157921.

The product of its digits is 10368, while the sum is 29.

The square root of 63624431 is about 7976.4923995451. The cubic root of 63624431 is about 399.2160290611.

The spelling of 63624431 in words is "sixty-three million, six hundred twenty-four thousand, four hundred thirty-one".

Divisors: 1 13 31 403 157877 2052401 4894187 63624431