72868461 has 4 divisors (see below), whose sum is σ = 97157952. Its totient is φ = 48578972.

The previous prime is 72868441. The next prime is 72868469. The reversal of 72868461 is 16486827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72868461 - 2⁷ = 72868333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72868469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12144741 + ... + 12144746.

It is an arithmetic number, because the mean of its divisors is an integer number (24289488).

Almost surely, 2^72868461 is an apocalyptic number.

It is an amenable number.

72868461 is a deficient number, since it is larger than the sum of its proper divisors (24289491).

72868461 is a wasteful number, since it uses less digits than its factorization.

72868461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24289490.

The product of its digits is 129024, while the sum is 42.

The square root of 72868461 is about 8536.3025368130. The cubic root of 72868461 is about 417.6827430965.

The spelling of 72868461 in words is "seventy-two million, eight hundred sixty-eight thousand, four hundred sixty-one".