78316097 has 4 divisors (see below), whose sum is σ = 79307520. Its totient is φ = 77324676.

The previous prime is 78316067. The next prime is 78316111. The reversal of 78316097 is 79061387.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79061387 = 523 ⋅151169.

It is a cyclic number.

It is not a de Polignac number, because 78316097 - 2⁸ = 78315841 is a prime.

It is a super-2 number, since 2×78316097² = 12266822098626818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78316067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495593 + ... + 495750.

It is an arithmetic number, because the mean of its divisors is an integer number (19826880).

Almost surely, 2^78316097 is an apocalyptic number.

It is an amenable number.

78316097 is a deficient number, since it is larger than the sum of its proper divisors (991423).

78316097 is an equidigital number, since it uses as much as digits as its factorization.

78316097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991422.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 78316097 is about 8849.6382411938. The cubic root of 78316097 is about 427.8422588856.

The spelling of 78316097 in words is "seventy-eight million, three hundred sixteen thousand, ninety-seven".