77698386 has 32 divisors (see below), whose sum is σ = 173113920. Its totient is φ = 25831872.

The previous prime is 77698367. The next prime is 77698399. The reversal of 77698386 is 68389677.

It is a super-5 number, since 5×77698386⁵ (a number of 41 digits) contains 55555 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21721 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (5409810).

Almost surely, 2^77698386 is an apocalyptic number.

77698386 is an abundant number, since it is smaller than the sum of its proper divisors (95415534).

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

77698386 is a wasteful number, since it uses less digits than its factorization.

77698386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767 (or 3761 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 77698386 is about 8814.6687969543. The cubic root of 77698386 is about 426.7144329932.

The spelling of 77698386 in words is "seventy-seven million, six hundred ninety-eight thousand, three hundred eighty-six".