77398166 has 8 divisors (see below), whose sum is σ = 116705664. Its totient is φ = 38496280.

The previous prime is 77398159. The next prime is 77398169. The reversal of 77398166 is 66189377.

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

It is a super-2 number, since 2×77398166² = 11980952200327112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77398166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77398169) 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, 100925 + ... + 101688.

It is an arithmetic number, because the mean of its divisors is an integer number (14588208).

Almost surely, 2^77398166 is an apocalyptic number.

77398166 is a deficient number, since it is larger than the sum of its proper divisors (39307498).

77398166 is a wasteful number, since it uses less digits than its factorization.

77398166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202806.

The product of its digits is 381024, while the sum is 47.

The square root of 77398166 is about 8797.6227470834. The cubic root of 77398166 is about 426.1641274311.

The spelling of 77398166 in words is "seventy-seven million, three hundred ninety-eight thousand, one hundred sixty-six".