77726227 has 4 divisors (see below), whose sum is σ = 82298376. Its totient is φ = 73154080.

The previous prime is 77726221. The next prime is 77726273. The reversal of 77726227 is 72262777.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72262777 = 3181 ⋅22717.

It is a cyclic number.

It is not a de Polignac number, because 77726227 - 2³ = 77726219 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 77726227.

It is not an unprimeable number, because it can be changed into a prime (77726221) 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, 2286049 + ... + 2286082.

It is an arithmetic number, because the mean of its divisors is an integer number (20574594).

Almost surely, 2^77726227 is an apocalyptic number.

77726227 is a deficient number, since it is larger than the sum of its proper divisors (4572149).

77726227 is a wasteful number, since it uses less digits than its factorization.

77726227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572148.

The product of its digits is 115248, while the sum is 40.

The square root of 77726227 is about 8816.2478980573. The cubic root of 77726227 is about 426.7653938880.

The spelling of 77726227 in words is "seventy-seven million, seven hundred twenty-six thousand, two hundred twenty-seven".