72067775 has 12 divisors (see below), whose sum is σ = 96238632. Its totient is φ = 53219040.

The previous prime is 72067759. The next prime is 72067837. The reversal of 72067775 is 57776027.

It is not a de Polignac number, because 72067775 - 2⁴ = 72067759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110549 + ... + 111198.

It is an arithmetic number, because the mean of its divisors is an integer number (8019886).

Almost surely, 2^72067775 is an apocalyptic number.

72067775 is a deficient number, since it is larger than the sum of its proper divisors (24170857).

72067775 is a wasteful number, since it uses less digits than its factorization.

72067775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221770 (or 221765 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 72067775 is about 8489.2741150230. The cubic root of 72067775 is about 416.1472585634.

The spelling of 72067775 in words is "seventy-two million, sixty-seven thousand, seven hundred seventy-five".