65506457 has 4 divisors (see below), whose sum is σ = 69359796. Its totient is φ = 61653120.

The previous prime is 65506429. The next prime is 65506459. The reversal of 65506457 is 75460556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23658496 + 41847961 = 4864^2 + 6469^2 .

It is a cyclic number.

It is not a de Polignac number, because 65506457 - 2⁸ = 65506201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65506457.

It is not an unprimeable number, because it can be changed into a prime (65506459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926644 + ... + 1926677.

It is an arithmetic number, because the mean of its divisors is an integer number (17339949).

Almost surely, 2^65506457 is an apocalyptic number.

It is an amenable number.

65506457 is a deficient number, since it is larger than the sum of its proper divisors (3853339).

65506457 is a wasteful number, since it uses less digits than its factorization.

65506457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853338.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 65506457 is about 8093.6059330808. The cubic root of 65506457 is about 403.1141444265.

The spelling of 65506457 in words is "sixty-five million, five hundred six thousand, four hundred fifty-seven".