645277058 has 16 divisors (see below), whose sum is σ = 1031647104. Its totient is φ = 301646400.

The previous prime is 645277033. The next prime is 645277063. The reversal of 645277058 is 850772546.

It is a super-2 number, since 2×645277058² = 832764963162270728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57710 + ... + 67977.

It is an arithmetic number, because the mean of its divisors is an integer number (64477944).

Almost surely, 2^645277058 is an apocalyptic number.

645277058 is a deficient number, since it is larger than the sum of its proper divisors (386370046).

645277058 is a wasteful number, since it uses less digits than its factorization.

645277058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125857.

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 645277058 is about 25402.3041868253. The cubic root of 645277058 is about 864.1359534361.

The spelling of 645277058 in words is "six hundred forty-five million, two hundred seventy-seven thousand, fifty-eight".