77065994 has 16 divisors (see below), whose sum is σ = 118516608. Its totient is φ = 37566912.

The previous prime is 77065993. The next prime is 77066009. The reversal of 77065994 is 49956077.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (77065993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25154 + ... + 28050.

It is an arithmetic number, because the mean of its divisors is an integer number (7407288).

Almost surely, 2^77065994 is an apocalyptic number.

77065994 is a deficient number, since it is larger than the sum of its proper divisors (41450614).

77065994 is a wasteful number, since it uses less digits than its factorization.

77065994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 77065994 is about 8778.7239391611. The cubic root of 77065994 is about 425.5535927797.

The spelling of 77065994 in words is "seventy-seven million, sixty-five thousand, nine hundred ninety-four".