645014457 has 12 divisors (see below), whose sum is σ = 932284080. Its totient is φ = 429734328.

The previous prime is 645014441. The next prime is 645014473. The reversal of 645014457 is 754410546.

645014457 is a `hidden beast` number, since 64 + 501 + 44 + 57 = 666.

645014457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (645014441) and next prime (645014473).

It is not a de Polignac number, because 645014457 - 2⁴ = 645014441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645014407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7563 + ... + 36704.

It is an arithmetic number, because the mean of its divisors is an integer number (77690340).

Almost surely, 2^645014457 is an apocalyptic number.

It is an amenable number.

645014457 is a deficient number, since it is larger than the sum of its proper divisors (287269623).

645014457 is a wasteful number, since it uses less digits than its factorization.

645014457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45892 (or 45889 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 645014457 is about 25397.1348187153. The cubic root of 645014457 is about 864.0187150331.

The spelling of 645014457 in words is "six hundred forty-five million, fourteen thousand, four hundred fifty-seven".