65615487 has 32 divisors (see below), whose sum is σ = 104225280. Its totient is φ = 35925120.

The previous prime is 65615477. The next prime is 65615491. The reversal of 65615487 is 78451656.

It is not a de Polignac number, because 65615487 - 2⁴ = 65615471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65615477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98937 + ... + 99597.

It is an arithmetic number, because the mean of its divisors is an integer number (3257040).

Almost surely, 2^65615487 is an apocalyptic number.

65615487 is a deficient number, since it is larger than the sum of its proper divisors (38609793).

65615487 is a wasteful number, since it uses less digits than its factorization.

65615487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 201600, while the sum is 42.

The square root of 65615487 is about 8100.3386966225. The cubic root of 65615487 is about 403.3376703462.

The spelling of 65615487 in words is "sixty-five million, six hundred fifteen thousand, four hundred eighty-seven".