78330497 has 4 divisors (see below), whose sum is σ = 89520576. Its totient is φ = 67140420.

The previous prime is 78330481. The next prime is 78330523. The reversal of 78330497 is 79403387.

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 78330497 - 2⁴ = 78330481 is a prime.

It is a super-2 number, since 2×78330497² = 12271333520534018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78330457) 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, 5595029 + ... + 5595042.

It is an arithmetic number, because the mean of its divisors is an integer number (22380144).

Almost surely, 2^78330497 is an apocalyptic number.

It is an amenable number.

78330497 is a deficient number, since it is larger than the sum of its proper divisors (11190079).

78330497 is a wasteful number, since it uses less digits than its factorization.

78330497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190078.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 78330497 is about 8850.4517963774. The cubic root of 78330497 is about 427.8684797657.

The spelling of 78330497 in words is "seventy-eight million, three hundred thirty thousand, four hundred ninety-seven".