72668954 has 8 divisors (see below), whose sum is σ = 112762260. Its totient is φ = 35081536.

The previous prime is 72668927. The next prime is 72668969. The reversal of 72668954 is 45986627.

It can be written as a sum of positive squares in 2 ways, for example, as 70644025 + 2024929 = 8405^2 + 1423^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 72668899 and 72668908.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 626399 + ... + 626514.

Almost surely, 2^72668954 is an apocalyptic number.

72668954 is a deficient number, since it is larger than the sum of its proper divisors (40093306).

72668954 is a wasteful number, since it uses less digits than its factorization.

72668954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252944.

The product of its digits is 725760, while the sum is 47.

The square root of 72668954 is about 8524.6087300239. The cubic root of 72668954 is about 417.3012026411.

The spelling of 72668954 in words is "seventy-two million, six hundred sixty-eight thousand, nine hundred fifty-four".