645101060 has 12 divisors (see below), whose sum is σ = 1354712268. Its totient is φ = 258040416.

The previous prime is 645101059. The next prime is 645101089. The reversal of 645101060 is 60101546.

It can be written as a sum of positive squares in 2 ways, for example, as 96510976 + 548590084 = 9824^2 + 23422^2 .

It is a super-2 number, since 2×645101060² = 832310755226247200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16127507 + ... + 16127546.

It is an arithmetic number, because the mean of its divisors is an integer number (112892689).

Almost surely, 2^645101060 is an apocalyptic number.

It is an amenable number.

645101060 is an abundant number, since it is smaller than the sum of its proper divisors (709611208).

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

645101060 is a wasteful number, since it uses less digits than its factorization.

645101060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32255062 (or 32255060 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 645101060 is about 25398.8397372793. The cubic root of 645101060 is about 864.0573825200.

The spelling of 645101060 in words is "six hundred forty-five million, one hundred one thousand, sixty".