72771375 has 16 divisors (see below), whose sum is σ = 121092192. Its totient is φ = 38811200.

The previous prime is 72771323. The next prime is 72771383. The reversal of 72771375 is 57317727.

It is not a de Polignac number, because 72771375 - 2¹⁰ = 72770351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96654 + ... + 97403.

It is an arithmetic number, because the mean of its divisors is an integer number (7568262).

Almost surely, 2^72771375 is an apocalyptic number.

72771375 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72771375 is a deficient number, since it is larger than the sum of its proper divisors (48320817).

72771375 is a wasteful number, since it uses less digits than its factorization.

72771375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194075 (or 194065 counting only the distinct ones).

The product of its digits is 72030, while the sum is 39.

The square root of 72771375 is about 8530.6139872813. The cubic root of 72771375 is about 417.4971613466.

The spelling of 72771375 in words is "seventy-two million, seven hundred seventy-one thousand, three hundred seventy-five".