158670864 has 120 divisors (see below), whose sum is σ = 489403200. Its totient is φ = 47589120.

The previous prime is 158670839. The next prime is 158670887. The reversal of 158670864 is 468076851.

It is a happy number.

158670864 is a `hidden beast` number, since 1 + 586 + 7 + 0 + 8 + 64 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172197 + ... + 173115.

It is an arithmetic number, because the mean of its divisors is an integer number (4078360).

Almost surely, 2^158670864 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 158670864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244701600).

158670864 is an abundant number, since it is smaller than the sum of its proper divisors (330732336).

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

158670864 is a wasteful number, since it uses less digits than its factorization.

158670864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 158670864 is about 12596.4623605201. The cubic root of 158670864 is about 541.3760788450.

The spelling of 158670864 in words is "one hundred fifty-eight million, six hundred seventy thousand, eight hundred sixty-four".