641102772 has 12 divisors (see below), whose sum is σ = 1495906496. Its totient is φ = 213700920.

The previous prime is 641102771. The next prime is 641102783. The reversal of 641102772 is 277201146.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×641102772² = 822025528532167968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641102771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26712604 + ... + 26712627.

Almost surely, 2^641102772 is an apocalyptic number.

It is an amenable number.

641102772 is an abundant number, since it is smaller than the sum of its proper divisors (854803724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641102772 is a wasteful number, since it uses less digits than its factorization.

641102772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53425238 (or 53425236 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 641102772 is about 25320.0073459705. The cubic root of 641102772 is about 862.2685607966.

The spelling of 641102772 in words is "six hundred forty-one million, one hundred two thousand, seven hundred seventy-two".