77698934 has 4 divisors (see below), whose sum is σ = 116548404. Its totient is φ = 38849466.

The previous prime is 77698931. The next prime is 77698969. The reversal of 77698934 is 43989677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43989677 = 1031 ⋅42667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77698931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19424732 + ... + 19424735.

It is an arithmetic number, because the mean of its divisors is an integer number (29137101).

Almost surely, 2^77698934 is an apocalyptic number.

77698934 is a deficient number, since it is larger than the sum of its proper divisors (38849470).

77698934 is a wasteful number, since it uses less digits than its factorization.

77698934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38849469.

The product of its digits is 2286144, while the sum is 53.

The square root of 77698934 is about 8814.6998814480. The cubic root of 77698934 is about 426.7154361842.

The spelling of 77698934 in words is "seventy-seven million, six hundred ninety-eight thousand, nine hundred thirty-four".