77214208 has 40 divisors (see below), whose sum is σ = 155168640. Its totient is φ = 38384640.

The previous prime is 77214191. The next prime is 77214209. The reversal of 77214208 is 80241277.

It is a self number, because there is not a number n which added to its sum of digits gives 77214208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77214209) 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, 122053 + ... + 122683.

It is an arithmetic number, because the mean of its divisors is an integer number (3879216).

Almost surely, 2^77214208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77214208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77584320).

77214208 is an abundant number, since it is smaller than the sum of its proper divisors (77954432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77214208 is an equidigital number, since it uses as much as digits as its factorization.

77214208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 77214208 is about 8787.1615439799. The cubic root of 77214208 is about 425.8262275520.

The spelling of 77214208 in words is "seventy-seven million, two hundred fourteen thousand, two hundred eight".