641167320 has 64 divisors (see below), whose sum is σ = 2007141120. Its totient is φ = 163543424.

The previous prime is 641167313. The next prime is 641167333. The reversal of 641167320 is 23761146.

It is a super-2 number, since 2×641167320² = 822191064471964800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113394 + ... + 118913.

It is an arithmetic number, because the mean of its divisors is an integer number (31361580).

Almost surely, 2^641167320 is an apocalyptic number.

641167320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641167320 is an abundant number, since it is smaller than the sum of its proper divisors (1365973800).

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

641167320 is a wasteful number, since it uses less digits than its factorization.

641167320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232344 (or 232340 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 641167320 is about 25321.2819580684. The cubic root of 641167320 is about 862.2974983532.

The spelling of 641167320 in words is "six hundred forty-one million, one hundred sixty-seven thousand, three hundred twenty".