72077205 has 16 divisors (see below), whose sum is σ = 115758720. Its totient is φ = 38296128.

The previous prime is 72077197. The next prime is 72077219. The reversal of 72077205 is 50277027.

It is not a de Polignac number, because 72077205 - 2³ = 72077197 is a prime.

It is a super-2 number, since 2×72077205² = 10390246961224050, which contains 22 as substring.

It is a Curzon number.

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, 4897 + ... + 12966.

It is an arithmetic number, because the mean of its divisors is an integer number (7234920).

Almost surely, 2^72077205 is an apocalyptic number.

It is an amenable number.

72077205 is a deficient number, since it is larger than the sum of its proper divisors (43681515).

72077205 is a wasteful number, since it uses less digits than its factorization.

72077205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 72077205 is about 8489.8295035884. The cubic root of 72077205 is about 416.1654085964.

The spelling of 72077205 in words is "seventy-two million, seventy-seven thousand, two hundred five".