70131789 has 54 divisors (see below), whose sum is σ = 127738026. Its totient is φ = 36953280.

The previous prime is 70131769. The next prime is 70131791. The reversal of 70131789 is 98713107.

It can be written as a sum of positive squares in 3 ways, for example, as 275625 + 69856164 = 525^2 + 8358^2 .

It is not a de Polignac number, because 70131789 - 2¹⁷ = 70000717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70131709) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 74059 + ... + 74999.

It is an arithmetic number, because the mean of its divisors is an integer number (2365519).

Almost surely, 2^70131789 is an apocalyptic number.

It is an amenable number.

70131789 is a deficient number, since it is larger than the sum of its proper divisors (57606237).

70131789 is a wasteful number, since it uses less digits than its factorization.

70131789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 70131789 is about 8374.4724609972. The cubic root of 70131789 is about 412.3870059655.

The spelling of 70131789 in words is "seventy million, one hundred thirty-one thousand, seven hundred eighty-nine".