72943659 has 10 divisors (see below), whose sum is σ = 108965340. Its totient is φ = 48629052.

The previous prime is 72943657. The next prime is 72943667. The reversal of 72943659 is 95634927.

It is a happy number.

It is not a de Polignac number, because 72943659 - 2¹ = 72943657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72943657) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 450189 + ... + 450350.

It is an arithmetic number, because the mean of its divisors is an integer number (10896534).

Almost surely, 2^72943659 is an apocalyptic number.

72943659 is a deficient number, since it is larger than the sum of its proper divisors (36021681).

72943659 is an equidigital number, since it uses as much as digits as its factorization.

72943659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900551 (or 900542 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 72943659 is about 8540.7060012624. The cubic root of 72943659 is about 417.8263722622.

The spelling of 72943659 in words is "seventy-two million, nine hundred forty-three thousand, six hundred fifty-nine".