78497064 has 48 divisors (see below), whose sum is σ = 213645120. Its totient is φ = 26036640.

The previous prime is 78497063. The next prime is 78497071. The reversal of 78497064 is 46079487.

It is not an unprimeable number, because it can be changed into a prime (78497063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12609 + ... + 17775.

It is an arithmetic number, because the mean of its divisors is an integer number (4450940).

Almost surely, 2^78497064 is an apocalyptic number.

It is an amenable number.

78497064 is an abundant number, since it is smaller than the sum of its proper divisors (135148056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78497064 is a wasteful number, since it uses less digits than its factorization.

78497064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390 (or 5383 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 78497064 is about 8859.8568837200. The cubic root of 78497064 is about 428.1715473854.

The spelling of 78497064 in words is "seventy-eight million, four hundred ninety-seven thousand, sixty-four".