65924961 has 4 divisors (see below), whose sum is σ = 87899952. Its totient is φ = 43949972.

The previous prime is 65924959. The next prime is 65924981. The reversal of 65924961 is 16942956.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65924961 - 2¹ = 65924959 is a prime.

It is a super-2 number, since 2×65924961² = 8692200965703042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65924981) 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, 10987491 + ... + 10987496.

It is an arithmetic number, because the mean of its divisors is an integer number (21974988).

Almost surely, 2^65924961 is an apocalyptic number.

It is an amenable number.

65924961 is a deficient number, since it is larger than the sum of its proper divisors (21974991).

65924961 is a wasteful number, since it uses less digits than its factorization.

65924961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21974990.

The product of its digits is 116640, while the sum is 42.

The square root of 65924961 is about 8119.4187599852. The cubic root of 65924961 is about 403.9707871077.

The spelling of 65924961 in words is "sixty-five million, nine hundred twenty-four thousand, nine hundred sixty-one".