72770 has 16 divisors (see below), whose sum is σ = 138240. Its totient is φ = 27504.

The previous prime is 72767. The next prime is 72797. The reversal of 72770 is 7727.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 72770.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2 + ... + 381.

It is an arithmetic number, because the mean of its divisors is an integer number (8640).

2⁷²⁷⁷⁰ is an apocalyptic number.

72770 is a deficient number, since it is larger than the sum of its proper divisors (65470).

72770 is a wasteful number, since it uses less digits than its factorization.

72770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 686, while the sum is 23.

The square root of 72770 is about 269.7591518373. The cubic root of 72770 is about 41.7494531823.

It can be divided in two parts, 727 and 70, that added together give a palindrome (797).

The spelling of 72770 in words is "seventy-two thousand, seven hundred seventy", and thus it is an iban number.