65244690 has 160 divisors (see below), whose sum is σ = 206578944. Its totient is φ = 14463360.

The previous prime is 65244679. The next prime is 65244703. The reversal of 65244690 is 9644256.

65244690 is a `hidden beast` number, since 6 + 524 + 46 + 90 = 666.

65244690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65244690² = 8513739146392200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 209635 + ... + 209945.

Almost surely, 2^65244690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65244690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103289472).

65244690 is an abundant number, since it is smaller than the sum of its proper divisors (141334254).

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

65244690 is a wasteful number, since it uses less digits than its factorization.

65244690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 65244690 is about 8077.4185232660. The cubic root of 65244690 is about 402.5764730022.

The spelling of 65244690 in words is "sixty-five million, two hundred forty-four thousand, six hundred ninety".