65457945 has 48 divisors (see below), whose sum is σ = 136506240. Its totient is φ = 28346112.

The previous prime is 65457943. The next prime is 65457961. The reversal of 65457945 is 54975456.

It is not a de Polignac number, because 65457945 - 2¹ = 65457943 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65457945.

It is not an unprimeable number, because it can be changed into a prime (65457943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (2843880).

Almost surely, 2^65457945 is an apocalyptic number.

It is an amenable number.

65457945 is an abundant number, since it is smaller than the sum of its proper divisors (71048295).

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

65457945 is a wasteful number, since it uses less digits than its factorization.

65457945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10974 (or 10971 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 65457945 is about 8090.6084443631. The cubic root of 65457945 is about 403.0146086772.

It can be divided in two parts, 6545 and 7945, that multiplied together give a palindrome (52000025).

The spelling of 65457945 in words is "sixty-five million, four hundred fifty-seven thousand, nine hundred forty-five".