59990640 has 80 divisors (see below), whose sum is σ = 187133856. Its totient is φ = 15897600.

The previous prime is 59990629. The next prime is 59990641. The reversal of 59990640 is 4609995.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 59990592 and 59990601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (59990641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42750 + ... + 44130.

Almost surely, 2^59990640 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 59990640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93566928).

59990640 is an abundant number, since it is smaller than the sum of its proper divisors (127143216).

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

59990640 is a wasteful number, since it uses less digits than its factorization.

59990640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 59990640 is about 7745.3624834478. The cubic root of 59990640 is about 391.4664057465.

The spelling of 59990640 in words is "fifty-nine million, nine hundred ninety thousand, six hundred forty".