78766097 has 4 divisors (see below), whose sum is σ = 78837360. Its totient is φ = 78694836.

The previous prime is 78766091. The next prime is 78766111. The reversal of 78766097 is 79066787.

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.

It is a cyclic number.

It is not a de Polignac number, because 78766097 - 2⁶ = 78766033 is a prime.

It is a super-2 number, since 2×78766097² = 12408196073226818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78766091) 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, 33947 + ... + 36192.

It is an arithmetic number, because the mean of its divisors is an integer number (19709340).

Almost surely, 2^78766097 is an apocalyptic number.

It is an amenable number.

78766097 is a deficient number, since it is larger than the sum of its proper divisors (71263).

78766097 is a wasteful number, since it uses less digits than its factorization.

78766097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71262.

The product of its (nonzero) digits is 889056, while the sum is 50.

The square root of 78766097 is about 8875.0265915095. The cubic root of 78766097 is about 428.6601470882.

The spelling of 78766097 in words is "seventy-eight million, seven hundred sixty-six thousand, ninety-seven".