78598620 has 96 divisors (see below), whose sum is σ = 248774400. Its totient is φ = 20596032.

The previous prime is 78598607. The next prime is 78598621. The reversal of 78598620 is 2689587.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78598621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30627 + ... + 33093.

It is an arithmetic number, because the mean of its divisors is an integer number (2591400).

Almost surely, 2^78598620 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 78598620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124387200).

78598620 is an abundant number, since it is smaller than the sum of its proper divisors (170175780).

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

78598620 is a wasteful number, since it uses less digits than its factorization.

78598620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2536 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 78598620 is about 8865.5862750300. The cubic root of 78598620 is about 428.3561175618.

The spelling of 78598620 in words is "seventy-eight million, five hundred ninety-eight thousand, six hundred twenty".