78164461 has 8 divisors (see below), whose sum is σ = 84502880. Its totient is φ = 72048528.

The previous prime is 78164447. The next prime is 78164477. The reversal of 78164461 is 16446187.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78164461 - 2¹³ = 78156269 is a prime.

It is a super-2 number, since 2×78164461² = 12219365926841042, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 78164461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78164561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54891 + ... + 56296.

It is an arithmetic number, because the mean of its divisors is an integer number (10562860).

Almost surely, 2^78164461 is an apocalyptic number.

It is an amenable number.

78164461 is a deficient number, since it is larger than the sum of its proper divisors (6338419).

78164461 is a wasteful number, since it uses less digits than its factorization.

78164461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111243.

The product of its digits is 32256, while the sum is 37.

The square root of 78164461 is about 8841.0667342804. The cubic root of 78164461 is about 427.5659504058.

The spelling of 78164461 in words is "seventy-eight million, one hundred sixty-four thousand, four hundred sixty-one".