65072979 has 6 divisors (see below), whose sum is σ = 93994316. Its totient is φ = 43381980.

The previous prime is 65072977. The next prime is 65073007. The reversal of 65072979 is 97927056.

It is not a de Polignac number, because 65072979 - 2¹ = 65072977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65072977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3615157 + ... + 3615174.

Almost surely, 2^65072979 is an apocalyptic number.

65072979 is a deficient number, since it is larger than the sum of its proper divisors (28921337).

65072979 is a wasteful number, since it uses less digits than its factorization.

65072979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230337 (or 7230334 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 65072979 is about 8066.7824440727. The cubic root of 65072979 is about 402.2229957551. Note that the first 3 decimals are identical.

The spelling of 65072979 in words is "sixty-five million, seventy-two thousand, nine hundred seventy-nine".