77072 has 10 divisors (see below), whose sum is σ = 149358. Its totient is φ = 38528.

The previous prime is 77069. The next prime is 77081. The reversal of 77072 is 27077.

It can be written as a sum of positive squares in only one way, i.e., 50176 + 26896 = 224^2 + 164^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2393 + ... + 2424.

2⁷⁷⁰⁷² is an apocalyptic number.

It is an amenable number.

77072 is a deficient number, since it is larger than the sum of its proper divisors (72286).

77072 is a wasteful number, since it uses less digits than its factorization.

77072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825 (or 4819 counting only the distinct ones).

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

The square root of 77072 is about 277.6184431914. The cubic root of 77072 is about 42.5564647411.

The spelling of 77072 in words is "seventy-seven thousand, seventy-two", and thus it is an iban number.