72869966 has 16 divisors (see below), whose sum is σ = 118011600. Its totient is φ = 33547008.

The previous prime is 72869947. The next prime is 72869969. The reversal of 72869966 is 66996827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72869969) 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, 7550 + ... + 14238.

It is an arithmetic number, because the mean of its divisors is an integer number (7375725).

Almost surely, 2^72869966 is an apocalyptic number.

72869966 is a deficient number, since it is larger than the sum of its proper divisors (45141634).

72869966 is a wasteful number, since it uses less digits than its factorization.

72869966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7123.

The product of its digits is 1959552, while the sum is 53.

The square root of 72869966 is about 8536.3906892785. The cubic root of 72869966 is about 417.6856186351.

The spelling of 72869966 in words is "seventy-two million, eight hundred sixty-nine thousand, nine hundred sixty-six".