77622227 has 8 divisors (see below), whose sum is σ = 78174720. Its totient is φ = 77072320.

The previous prime is 77622203. The next prime is 77622269. The reversal of 77622227 is 72222677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77622227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77625227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148727 + ... + 149247.

It is an arithmetic number, because the mean of its divisors is an integer number (9771840).

Almost surely, 2^77622227 is an apocalyptic number.

77622227 is a deficient number, since it is larger than the sum of its proper divisors (552493).

77622227 is a wasteful number, since it uses less digits than its factorization.

77622227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293.

The product of its digits is 32928, while the sum is 35.

The square root of 77622227 is about 8810.3477229903. The cubic root of 77622227 is about 426.5749673403.

The spelling of 77622227 in words is "seventy-seven million, six hundred twenty-two thousand, two hundred twenty-seven".