659670819242 has 8 divisors (see below), whose sum is σ = 989513546916. Its totient is φ = 329832970272.

The previous prime is 659670819239. The next prime is 659670819259. The reversal of 659670819242 is 242918076956.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 403747138921 + 255923680321 = 635411^2 + 505889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×659670819242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860483 + ... + 1435190.

Almost surely, 2^659670819242 is an apocalyptic number.

659670819242 is a deficient number, since it is larger than the sum of its proper divisors (329842727674).

659670819242 is a wasteful number, since it uses less digits than its factorization.

659670819242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439352.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 659670819242 in words is "six hundred fifty-nine billion, six hundred seventy million, eight hundred nineteen thousand, two hundred forty-two".