65663244 has 24 divisors (see below), whose sum is σ = 170238320. Its totient is φ = 21887712.

The previous prime is 65663233. The next prime is 65663249. The reversal of 65663244 is 44236656.

It is a super-2 number, since 2×65663244² = 8623323225207072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65663199 and 65663208.

It is not an unprimeable number, because it can be changed into a prime (65663249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303889 + ... + 304104.

Almost surely, 2^65663244 is an apocalyptic number.

It is an amenable number.

65663244 is an abundant number, since it is smaller than the sum of its proper divisors (104575076).

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

65663244 is a wasteful number, since it uses less digits than its factorization.

65663244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608006 (or 607998 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 65663244 is about 8103.2860001360. The cubic root of 65663244 is about 403.4355005318.

The spelling of 65663244 in words is "sixty-five million, six hundred sixty-three thousand, two hundred forty-four".