641029516 has 6 divisors (see below), whose sum is σ = 1121801660. Its totient is φ = 320514756.

The previous prime is 641029511. The next prime is 641029517. The reversal of 641029516 is 615920146.

It is a super-3 number, since 3×641029516³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (641029511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80128686 + ... + 80128693.

Almost surely, 2^641029516 is an apocalyptic number.

It is an amenable number.

641029516 is a deficient number, since it is larger than the sum of its proper divisors (480772144).

641029516 is a wasteful number, since it uses less digits than its factorization.

641029516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160257383 (or 160257381 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 641029516 is about 25318.5607015881. The cubic root of 641029516 is about 862.2357169976.

The spelling of 641029516 in words is "six hundred forty-one million, twenty-nine thousand, five hundred sixteen".