79698740 has 48 divisors (see below), whose sum is σ = 187536384. Its totient is φ = 28195200.

The previous prime is 79698733. The next prime is 79698767. The reversal of 79698740 is 4789697.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3245 + ... + 13035.

It is an arithmetic number, because the mean of its divisors is an integer number (3907008).

Almost surely, 2^79698740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79698740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93768192).

79698740 is an abundant number, since it is smaller than the sum of its proper divisors (107837644).

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

79698740 is a wasteful number, since it uses less digits than its factorization.

79698740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9848 (or 9846 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 79698740 is about 8927.4150794057. The cubic root of 79698740 is about 430.3453868254.

The spelling of 79698740 in words is "seventy-nine million, six hundred ninety-eight thousand, seven hundred forty".