72669718 has 16 divisors (see below), whose sum is σ = 125173440. Its totient is φ = 31293000.

The previous prime is 72669703. The next prime is 72669733. The reversal of 72669718 is 81796627.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72669703) and next prime (72669733).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86508 + ... + 87343.

It is an arithmetic number, because the mean of its divisors is an integer number (7823340).

Almost surely, 2^72669718 is an apocalyptic number.

72669718 is a deficient number, since it is larger than the sum of its proper divisors (52503722).

72669718 is a wasteful number, since it uses less digits than its factorization.

72669718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173883.

The product of its digits is 254016, while the sum is 46.

The square root of 72669718 is about 8524.6535413470. The cubic root of 72669718 is about 417.3026650584.

The spelling of 72669718 in words is "seventy-two million, six hundred sixty-nine thousand, seven hundred eighteen".