70771730 has 16 divisors (see below), whose sum is σ = 127557720. Its totient is φ = 28271232.

The previous prime is 70771717. The next prime is 70771733. The reversal of 70771730 is 3717707.

It can be written as a sum of positive squares in 4 ways, for example, as 67782289 + 2989441 = 8233^2 + 1729^2 .

It is not an unprimeable number, because it can be changed into a prime (70771733) 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, 4022 + ... + 12558.

Almost surely, 2^70771730 is an apocalyptic number.

70771730 is a deficient number, since it is larger than the sum of its proper divisors (56785990).

70771730 is a wasteful number, since it uses less digits than its factorization.

70771730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373.

The product of its (nonzero) digits is 7203, while the sum is 32.

The square root of 70771730 is about 8412.5935358842. The cubic root of 70771730 is about 413.6375311542.

The spelling of 70771730 in words is "seventy million, seven hundred seventy-one thousand, seven hundred thirty".