65881495 has 4 divisors (see below), whose sum is σ = 79057800. Its totient is φ = 52705192.

The previous prime is 65881489. The next prime is 65881561. The reversal of 65881495 is 59418856.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65881495 is a prime.

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, 6588145 + ... + 6588154.

It is an arithmetic number, because the mean of its divisors is an integer number (19764450).

Almost surely, 2^65881495 is an apocalyptic number.

65881495 is a deficient number, since it is larger than the sum of its proper divisors (13176305).

65881495 is a wasteful number, since it uses less digits than its factorization.

65881495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176304.

The product of its digits is 345600, while the sum is 46.

The square root of 65881495 is about 8116.7416492088. The cubic root of 65881495 is about 403.8819848573.

The spelling of 65881495 in words is "sixty-five million, eight hundred eighty-one thousand, four hundred ninety-five".