78616605 has 8 divisors (see below), whose sum is σ = 125786592. Its totient is φ = 41928848.

The previous prime is 78616597. The next prime is 78616663. The reversal of 78616605 is 50661687.

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 78616605 - 2³ = 78616597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2620539 + ... + 2620568.

It is an arithmetic number, because the mean of its divisors is an integer number (15723324).

Almost surely, 2^78616605 is an apocalyptic number.

It is an amenable number.

78616605 is a deficient number, since it is larger than the sum of its proper divisors (47169987).

78616605 is a wasteful number, since it uses less digits than its factorization.

78616605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241115.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 78616605 is about 8866.6005323348. The cubic root of 78616605 is about 428.3887873349.

It can be divided in two parts, 786 and 16605, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 78616605 in words is "seventy-eight million, six hundred sixteen thousand, six hundred five".