870642102 has 16 divisors (see below), whose sum is σ = 1899582912. Its totient is φ = 263830920.

The previous prime is 870641983. The next prime is 870642103. The reversal of 870642102 is 201246078.

It is a self number, because there is not a number n which added to its sum of digits gives 870642102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870642103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6595708 + ... + 6595839.

It is an arithmetic number, because the mean of its divisors is an integer number (118723932).

Almost surely, 2^870642102 is an apocalyptic number.

870642102 is an abundant number, since it is smaller than the sum of its proper divisors (1028940810).

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

870642102 is a wasteful number, since it uses less digits than its factorization.

870642102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13191563.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 870642102 is about 29506.6450481921. The cubic root of 870642102 is about 954.8750700498.

The spelling of 870642102 in words is "eight hundred seventy million, six hundred forty-two thousand, one hundred two".