65377215 has 12 divisors (see below), whose sum is σ = 113320584. Its totient is φ = 34867824.

The previous prime is 65377211. The next prime is 65377231. The reversal of 65377215 is 51277356.

It is not a de Polignac number, because 65377215 - 2² = 65377211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65377215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65377211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 726369 + ... + 726458.

It is an arithmetic number, because the mean of its divisors is an integer number (9443382).

Almost surely, 2^65377215 is an apocalyptic number.

65377215 is a deficient number, since it is larger than the sum of its proper divisors (47943369).

65377215 is a wasteful number, since it uses less digits than its factorization.

65377215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452838 (or 1452835 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 65377215 is about 8085.6177871576. The cubic root of 65377215 is about 402.8488597426.

The spelling of 65377215 in words is "sixty-five million, three hundred seventy-seven thousand, two hundred fifteen".