77864026 has 8 divisors (see below), whose sum is σ = 117005184. Its totient is φ = 38862300.

The previous prime is 77864009. The next prime is 77864057. The reversal of 77864026 is 62046877.

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

It is a self number, because there is not a number n which added to its sum of digits gives 77864026.

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 3 ways as a sum of consecutive naturals, for example, 33450 + ... + 35701.

It is an arithmetic number, because the mean of its divisors is an integer number (14625648).

Almost surely, 2^77864026 is an apocalyptic number.

77864026 is a deficient number, since it is larger than the sum of its proper divisors (39141158).

77864026 is a wasteful number, since it uses less digits than its factorization.

77864026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69716.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 77864026 is about 8824.0594966263. The cubic root of 77864026 is about 427.0174457713.

The spelling of 77864026 in words is "seventy-seven million, eight hundred sixty-four thousand, twenty-six".