64648743 has 8 divisors (see below), whose sum is σ = 89170800. Its totient is φ = 41612928.

The previous prime is 64648741. The next prime is 64648757. The reversal of 64648743 is 34784646.

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

It is not a de Polignac number, because 64648743 - 2¹ = 64648741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64648695 and 64648704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64648741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371458 + ... + 371631.

It is an arithmetic number, because the mean of its divisors is an integer number (11146350).

Almost surely, 2^64648743 is an apocalyptic number.

64648743 is a deficient number, since it is larger than the sum of its proper divisors (24522057).

64648743 is a wasteful number, since it uses less digits than its factorization.

64648743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743121.

The product of its digits is 387072, while the sum is 42.

The square root of 64648743 is about 8040.4442041469. Note that the first 3 decimals coincide. The cubic root of 64648743 is about 401.3470067569.

The spelling of 64648743 in words is "sixty-four million, six hundred forty-eight thousand, seven hundred forty-three".