870640133 has 6 divisors (see below), whose sum is σ = 956984742. Its totient is φ = 791490920.

The previous prime is 870640103. The next prime is 870640171. The reversal of 870640133 is 331046078.

870640133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 477728449 + 392911684 = 21857^2 + 19822^2 .

It is not a de Polignac number, because 870640133 - 2¹⁶ = 870574597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 870640133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870640103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3597566 + ... + 3597807.

It is an arithmetic number, because the mean of its divisors is an integer number (159497457).

Almost surely, 2^870640133 is an apocalyptic number.

It is an amenable number.

870640133 is a deficient number, since it is larger than the sum of its proper divisors (86344609).

870640133 is a wasteful number, since it uses less digits than its factorization.

870640133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195395 (or 7195384 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 870640133 is about 29506.6116828076. The cubic root of 870640133 is about 954.8743502169.

The spelling of 870640133 in words is "eight hundred seventy million, six hundred forty thousand, one hundred thirty-three".