78334997 has 16 divisors (see below), whose sum is σ = 90058752. Its totient is φ = 67495680.

The previous prime is 78334981. The next prime is 78335027. The reversal of 78334997 is 79943387.

It is a cyclic number.

It is not a de Polignac number, because 78334997 - 2⁴ = 78334981 is a prime.

It is a super-2 number, since 2×78334997² = 12272743509980018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78334897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26672 + ... + 29462.

It is an arithmetic number, because the mean of its divisors is an integer number (5628672).

Almost surely, 2^78334997 is an apocalyptic number.

It is an amenable number.

78334997 is a deficient number, since it is larger than the sum of its proper divisors (11723755).

78334997 is a wasteful number, since it uses less digits than its factorization.

78334997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948.

The product of its digits is 1143072, while the sum is 50.

The square root of 78334997 is about 8850.7060170362. The cubic root of 78334997 is about 427.8766731317.

The spelling of 78334997 in words is "seventy-eight million, three hundred thirty-four thousand, nine hundred ninety-seven".