77604966 has 112 divisors (see below), whose sum is σ = 192647808. Its totient is φ = 23328000.

The previous prime is 77604953. The next prime is 77604977. The reversal of 77604966 is 66940677.

It is a super-2 number, since 2×77604966² = 12045061495722312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 768316 + ... + 768416.

Almost surely, 2^77604966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77604966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96323904).

77604966 is an abundant number, since it is smaller than the sum of its proper divisors (115042842).

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

77604966 is a wasteful number, since it uses less digits than its factorization.

77604966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 77604966 is about 8809.3680817639. The cubic root of 77604966 is about 426.5433455715.

The spelling of 77604966 in words is "seventy-seven million, six hundred four thousand, nine hundred sixty-six".