72816477 has 8 divisors (see below), whose sum is σ = 100436640. Its totient is φ = 46870320.

The previous prime is 72816467. The next prime is 72816479. The reversal of 72816477 is 77461827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72816477 - 2⁷ = 72816349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72816479) 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, 418399 + ... + 418572.

It is an arithmetic number, because the mean of its divisors is an integer number (12554580).

Almost surely, 2^72816477 is an apocalyptic number.

It is an amenable number.

72816477 is a deficient number, since it is larger than the sum of its proper divisors (27620163).

72816477 is a wasteful number, since it uses less digits than its factorization.

72816477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837003.

The product of its digits is 131712, while the sum is 42.

The square root of 72816477 is about 8533.2571155450. The cubic root of 72816477 is about 417.5833951997.

It can be divided in two parts, 728 and 16477, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 72816477 in words is "seventy-two million, eight hundred sixteen thousand, four hundred seventy-seven".