77276161 has 4 divisors (see below), whose sum is σ = 77338800. Its totient is φ = 77213524.

The previous prime is 77276153. The next prime is 77276167. The reversal of 77276161 is 16167277.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77276161 - 2³ = 77276153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77276161.

It is not an unprimeable number, because it can be changed into a prime (77276167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29431 + ... + 31948.

It is an arithmetic number, because the mean of its divisors is an integer number (19334700).

Almost surely, 2^77276161 is an apocalyptic number.

It is an amenable number.

77276161 is a deficient number, since it is larger than the sum of its proper divisors (62639).

77276161 is a wasteful number, since it uses less digits than its factorization.

77276161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62638.

The product of its digits is 24696, while the sum is 37.

The square root of 77276161 is about 8790.6860369370. The cubic root of 77276161 is about 425.9400846620.

The spelling of 77276161 in words is "seventy-seven million, two hundred seventy-six thousand, one hundred sixty-one".