78339164 has 6 divisors (see below), whose sum is σ = 137093544. Its totient is φ = 39169580.

The previous prime is 78339161. The next prime is 78339167. The reversal of 78339164 is 46193387.

It is an interprime number because it is at equal distance from previous prime (78339161) and next prime (78339167).

It is a super-2 number, since 2×78339164² = 12274049232437792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78339161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9792392 + ... + 9792399.

It is an arithmetic number, because the mean of its divisors is an integer number (22848924).

Almost surely, 2^78339164 is an apocalyptic number.

It is an amenable number.

78339164 is a deficient number, since it is larger than the sum of its proper divisors (58754380).

78339164 is a wasteful number, since it uses less digits than its factorization.

78339164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19584795 (or 19584793 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 78339164 is about 8850.9414188548. The cubic root of 78339164 is about 427.8842599088.

The spelling of 78339164 in words is "seventy-eight million, three hundred thirty-nine thousand, one hundred sixty-four".