72516477 has 8 divisors (see below), whose sum is σ = 105478560. Its totient is φ = 43949360.

The previous prime is 72516463. The next prime is 72516481. The reversal of 72516477 is 77461527.

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

It is a cyclic number.

It is not a de Polignac number, because 72516477 - 2⁴ = 72516461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72516277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098702 + ... + 1098767.

It is an arithmetic number, because the mean of its divisors is an integer number (13184820).

Almost surely, 2^72516477 is an apocalyptic number.

It is an amenable number.

72516477 is a deficient number, since it is larger than the sum of its proper divisors (32962083).

72516477 is a wasteful number, since it uses less digits than its factorization.

72516477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197483.

The product of its digits is 82320, while the sum is 39.

The square root of 72516477 is about 8515.6606907509. The cubic root of 72516477 is about 417.0091320625.

The spelling of 72516477 in words is "seventy-two million, five hundred sixteen thousand, four hundred seventy-seven".