78497708 has 12 divisors (see below), whose sum is σ = 140294112. Its totient is φ = 38413680.

The previous prime is 78497707. The next prime is 78497711. The reversal of 78497708 is 80779487.

It is a super-2 number, since 2×78497708² = 12323780322506528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78497701) 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, 208583 + ... + 208958.

It is an arithmetic number, because the mean of its divisors is an integer number (11691176).

Almost surely, 2^78497708 is an apocalyptic number.

It is an amenable number.

78497708 is a deficient number, since it is larger than the sum of its proper divisors (61796404).

78497708 is a wasteful number, since it uses less digits than its factorization.

78497708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417592 (or 417590 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 78497708 is about 8859.8932273476. The cubic root of 78497708 is about 428.1727183070.

The spelling of 78497708 in words is "seventy-eight million, four hundred ninety-seven thousand, seven hundred eight".