870788 has 6 divisors (see below), whose sum is σ = 1523886. Its totient is φ = 435392.

The previous prime is 870787. The next prime is 870809. The reversal of 870788 is 887078.

It can be written as a sum of positive squares in only one way, i.e., 861184 + 9604 = 928^2 + 98^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108845 + ... + 108852.

It is an arithmetic number, because the mean of its divisors is an integer number (253981).

2⁸⁷⁰⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

870788 is a deficient number, since it is larger than the sum of its proper divisors (653098).

870788 is a wasteful number, since it uses less digits than its factorization.

870788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217701 (or 217699 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 870788 is about 933.1602220412. The cubic root of 870788 is about 95.4928404855.

Subtracting 870788 from its reverse (887078), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 870788 in words is "eight hundred seventy thousand, seven hundred eighty-eight".