65612939 has 4 divisors (see below), whose sum is σ = 74986224. Its totient is φ = 56239656.

The previous prime is 65612927. The next prime is 65612959. The reversal of 65612939 is 93921656.

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

It is a cyclic number.

It is not a de Polignac number, because 65612939 - 2¹⁶ = 65547403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65612896 and 65612905.

It is not an unprimeable number, because it can be changed into a prime (65612959) 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, 4686632 + ... + 4686645.

It is an arithmetic number, because the mean of its divisors is an integer number (18746556).

Almost surely, 2^65612939 is an apocalyptic number.

65612939 is a deficient number, since it is larger than the sum of its proper divisors (9373285).

65612939 is an equidigital number, since it uses as much as digits as its factorization.

65612939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373284.

The product of its digits is 87480, while the sum is 41.

The square root of 65612939 is about 8100.1814177215. The cubic root of 65612939 is about 403.3324494361.

The spelling of 65612939 in words is "sixty-five million, six hundred twelve thousand, nine hundred thirty-nine".