65497415 has 4 divisors (see below), whose sum is σ = 78596904. Its totient is φ = 52397928.

The previous prime is 65497409. The next prime is 65497433. The reversal of 65497415 is 51479456.

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 65497415 - 2¹⁰ = 65496391 is a prime.

It is a super-2 number, since 2×65497415² = 8579822743364450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6549737 + ... + 6549746.

It is an arithmetic number, because the mean of its divisors is an integer number (19649226).

Almost surely, 2^65497415 is an apocalyptic number.

65497415 is a deficient number, since it is larger than the sum of its proper divisors (13099489).

65497415 is a wasteful number, since it uses less digits than its factorization.

65497415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13099488.

The product of its digits is 151200, while the sum is 41.

The square root of 65497415 is about 8093.0473247103. The cubic root of 65497415 is about 403.0955959965.

The spelling of 65497415 in words is "sixty-five million, four hundred ninety-seven thousand, four hundred fifteen".