78335064 has 24 divisors (see below), whose sum is σ = 212157660. Its totient is φ = 26111664.

The previous prime is 78335063. The next prime is 78335071. The reversal of 78335064 is 46053387.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78335064² = 12272764503768192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78335063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 543922 + ... + 544065.

Almost surely, 2^78335064 is an apocalyptic number.

It is an amenable number.

78335064 is an abundant number, since it is smaller than the sum of its proper divisors (133822596).

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

78335064 is a wasteful number, since it uses less digits than its factorization.

78335064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087999 (or 1087992 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 78335064 is about 8850.7098020441. The cubic root of 78335064 is about 427.8767951194.

The spelling of 78335064 in words is "seventy-eight million, three hundred thirty-five thousand, sixty-four".