65766988 has 24 divisors (see below), whose sum is σ = 132304032. Its totient is φ = 28020864.

The previous prime is 65766977. The next prime is 65766991. The reversal of 65766988 is 88966756.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1945 + ... + 11632.

It is an arithmetic number, because the mean of its divisors is an integer number (5512668).

Almost surely, 2^65766988 is an apocalyptic number.

It is an amenable number.

65766988 is an abundant number, since it is smaller than the sum of its proper divisors (66537044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65766988 is a wasteful number, since it uses less digits than its factorization.

65766988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13761 (or 13759 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 65766988 is about 8109.6848274147. The cubic root of 65766988 is about 403.6478567251.

The spelling of 65766988 in words is "sixty-five million, seven hundred sixty-six thousand, nine hundred eighty-eight".