65991046 has 16 divisors (see below), whose sum is σ = 108126720. Its totient is φ = 29956680.

The previous prime is 65991019. The next prime is 65991053. The reversal of 65991046 is 64019956.

It is a congruent 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, 21415 + ... + 24301.

It is an arithmetic number, because the mean of its divisors is an integer number (6757920).

Almost surely, 2^65991046 is an apocalyptic number.

65991046 is a deficient number, since it is larger than the sum of its proper divisors (42135674).

65991046 is a wasteful number, since it uses less digits than its factorization.

65991046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 65991046 is about 8123.4873053388. The cubic root of 65991046 is about 404.1057258503.

It can be divided in two parts, 659910 and 46, that added together give a palindrome (659956).

The spelling of 65991046 in words is "sixty-five million, nine hundred ninety-one thousand, forty-six".