77969682 has 96 divisors (see below), whose sum is σ = 204652800. Its totient is φ = 21936096.

The previous prime is 77969669. The next prime is 77969699. The reversal of 77969682 is 28696977.

It is a super-2 number, since 2×77969682² = 12158542622362248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208848 + ... + 209220.

It is an arithmetic number, because the mean of its divisors is an integer number (2131800).

Almost surely, 2^77969682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77969682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102326400).

77969682 is an abundant number, since it is smaller than the sum of its proper divisors (126683118).

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

77969682 is a wasteful number, since it uses less digits than its factorization.

77969682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 464 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 77969682 is about 8830.0442807497. The cubic root of 77969682 is about 427.2105026770.

The spelling of 77969682 in words is "seventy-seven million, nine hundred sixty-nine thousand, six hundred eighty-two".