870766605 has 40 divisors (see below), whose sum is σ = 1652762232. Its totient is φ = 437087232.

The previous prime is 870766543. The next prime is 870766607. The reversal of 870766605 is 506667078.

It can be written as a sum of positive squares in 4 ways, for example, as 55264356 + 815502249 = 7434^2 + 28557^2 .

It is not a de Polignac number, because 870766605 - 2⁶ = 870766541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870766607) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 56352 + ... + 70121.

Almost surely, 2^870766605 is an apocalyptic number.

870766605 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

870766605 is a deficient number, since it is larger than the sum of its proper divisors (781995627).

870766605 is a wasteful number, since it uses less digits than its factorization.

870766605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126507 (or 126498 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 870766605 is about 29508.7547178799. The cubic root of 870766605 is about 954.9205840232.

The spelling of 870766605 in words is "eight hundred seventy million, seven hundred sixty-six thousand, six hundred five".