78898616 has 8 divisors (see below), whose sum is σ = 147934920. Its totient is φ = 39449304.

The previous prime is 78898613. The next prime is 78898663. The reversal of 78898616 is 61689887.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78898613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4931156 + ... + 4931171.

It is an arithmetic number, because the mean of its divisors is an integer number (18491865).

Almost surely, 2^78898616 is an apocalyptic number.

It is an amenable number.

78898616 is a deficient number, since it is larger than the sum of its proper divisors (69036304).

78898616 is a wasteful number, since it uses less digits than its factorization.

78898616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9862333 (or 9862329 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 78898616 is about 8882.4892907338. The cubic root of 78898616 is about 428.9004103006.

The spelling of 78898616 in words is "seventy-eight million, eight hundred ninety-eight thousand, six hundred sixteen".