65243772 has 48 divisors (see below), whose sum is σ = 184531200. Its totient is φ = 19770480.

The previous prime is 65243753. The next prime is 65243791. The reversal of 65243772 is 27734256.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65243753) and next prime (65243791).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26272 + ... + 28647.

It is an arithmetic number, because the mean of its divisors is an integer number (3844400).

Almost surely, 2^65243772 is an apocalyptic number.

It is an amenable number.

65243772 is an abundant number, since it is smaller than the sum of its proper divisors (119287428).

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

65243772 is a wasteful number, since it uses less digits than its factorization.

65243772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54943 (or 54935 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 65243772 is about 8077.3616979803. The cubic root of 65243772 is about 402.5745848949.

It can be divided in two parts, 6524 and 3772, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 65243772 in words is "sixty-five million, two hundred forty-three thousand, seven hundred seventy-two".