641137047 has 8 divisors (see below), whose sum is σ = 855010944. Its totient is φ = 427343928.

The previous prime is 641137037. The next prime is 641137051. The reversal of 641137047 is 740731146.

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

It is not a de Polignac number, because 641137047 - 2⁸ = 641136791 is a prime.

It is a super-2 number, since 2×641137047² = 822113426071760418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 641136999 and 641137017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641137037) 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, 1728 + ... + 35850.

It is an arithmetic number, because the mean of its divisors is an integer number (106876368).

Almost surely, 2^641137047 is an apocalyptic number.

641137047 is a deficient number, since it is larger than the sum of its proper divisors (213873897).

641137047 is a wasteful number, since it uses less digits than its factorization.

641137047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40389.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 641137047 is about 25320.6841732209. The cubic root of 641137047 is about 862.2839268864.

The spelling of 641137047 in words is "six hundred forty-one million, one hundred thirty-seven thousand, forty-seven".