78698379 has 8 divisors (see below), whose sum is σ = 105218560. Its totient is φ = 52321896.

The previous prime is 78698363. The next prime is 78698383. The reversal of 78698379 is 97389687.

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

It is not a de Polignac number, because 78698379 - 2⁴ = 78698363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78648379) 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, 34639 + ... + 36840.

It is an arithmetic number, because the mean of its divisors is an integer number (13152320).

Almost surely, 2^78698379 is an apocalyptic number.

78698379 is a deficient number, since it is larger than the sum of its proper divisors (26520181).

78698379 is a wasteful number, since it uses less digits than its factorization.

78698379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71849.

The product of its digits is 4572288, while the sum is 57.

The square root of 78698379 is about 8871.2106840047. The cubic root of 78698379 is about 428.5372671025.

The spelling of 78698379 in words is "seventy-eight million, six hundred ninety-eight thousand, three hundred seventy-nine".