72657479 has 8 divisors (see below), whose sum is σ = 73273728. Its totient is φ = 72044280.

The previous prime is 72657467. The next prime is 72657491. The reversal of 72657479 is 97475627.

It is an interprime number because it is at equal distance from previous prime (72657467) and next prime (72657491).

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 72657479 - 2¹⁶ = 72591943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72657419) 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, 74654 + ... + 75620.

It is an arithmetic number, because the mean of its divisors is an integer number (9159216).

Almost surely, 2^72657479 is an apocalyptic number.

72657479 is a deficient number, since it is larger than the sum of its proper divisors (616249).

72657479 is a wasteful number, since it uses less digits than its factorization.

72657479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525.

The product of its digits is 740880, while the sum is 47.

The square root of 72657479 is about 8523.9356520330. The cubic root of 72657479 is about 417.2792364363.

The spelling of 72657479 in words is "seventy-two million, six hundred fifty-seven thousand, four hundred seventy-nine".