659313642 has 128 divisors (see below), whose sum is σ = 1568931840. Its totient is φ = 182891520.

The previous prime is 659313631. The next prime is 659313649. The reversal of 659313642 is 246313956.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 659313642.

It is not an unprimeable number, because it can be changed into a prime (659313649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5191383 + ... + 5191509.

It is an arithmetic number, because the mean of its divisors is an integer number (12257280).

Almost surely, 2^659313642 is an apocalyptic number.

659313642 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 659313642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784465920).

659313642 is an abundant number, since it is smaller than the sum of its proper divisors (909618198).

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

659313642 is a wasteful number, since it uses less digits than its factorization.

659313642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308.

The product of its digits is 116640, while the sum is 39.

The square root of 659313642 is about 25677.1034581395. The cubic root of 659313642 is about 870.3568545311.

The spelling of 659313642 in words is "six hundred fifty-nine million, three hundred thirteen thousand, six hundred forty-two".