78023698 has 8 divisors (see below), whose sum is σ = 117458892. Its totient is φ = 38870736.

The previous prime is 78023681. The next prime is 78023749. The reversal of 78023698 is 89632087.

It can be written as a sum of positive squares in 2 ways, for example, as 76685049 + 1338649 = 8757^2 + 1157^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69865 + ... + 70972.

Almost surely, 2^78023698 is an apocalyptic number.

78023698 is a deficient number, since it is larger than the sum of its proper divisors (39435194).

78023698 is a wasteful number, since it uses less digits than its factorization.

78023698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141116.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 78023698 is about 8833.1023994970. The cubic root of 78023698 is about 427.3091345001.

The spelling of 78023698 in words is "seventy-eight million, twenty-three thousand, six hundred ninety-eight".