72503966 has 16 divisors (see below), whose sum is σ = 110853600. Its totient is φ = 35559648.

The previous prime is 72503957. The next prime is 72503969. The reversal of 72503966 is 66930527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72503969) 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, 20840 + ... + 24068.

It is an arithmetic number, because the mean of its divisors is an integer number (6928350).

Almost surely, 2^72503966 is an apocalyptic number.

72503966 is a deficient number, since it is larger than the sum of its proper divisors (38349634).

72503966 is a wasteful number, since it uses less digits than its factorization.

72503966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 72503966 is about 8514.9260713174. The cubic root of 72503966 is about 416.9851490014.

The spelling of 72503966 in words is "seventy-two million, five hundred three thousand, nine hundred sixty-six".