72455659 has 16 divisors (see below), whose sum is σ = 76677120. Its totient is φ = 68372640.

The previous prime is 72455549. The next prime is 72455671. The reversal of 72455659 is 95655427.

It is a cyclic number.

It is not a de Polignac number, because 72455659 - 2⁹ = 72455147 is a prime.

It is a super-2 number, since 2×72455659² = 10499645042248562, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (378000) is a multiple of the sum of its prime divisors (450).

It is not an unprimeable number, because it can be changed into a prime (72455699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379254 + ... + 379444.

It is an arithmetic number, because the mean of its divisors is an integer number (4792320).

Almost surely, 2^72455659 is an apocalyptic number.

72455659 is a deficient number, since it is larger than the sum of its proper divisors (4221461).

72455659 is a wasteful number, since it uses less digits than its factorization.

72455659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450.

The product of its digits is 378000, while the sum is 43.

The square root of 72455659 is about 8512.0889915461. The cubic root of 72455659 is about 416.8925206116.

The spelling of 72455659 in words is "seventy-two million, four hundred fifty-five thousand, six hundred fifty-nine".