70289690 has 24 divisors (see below), whose sum is σ = 128697660. Its totient is φ = 27640320.

The previous prime is 70289689. The next prime is 70289699. The reversal of 70289690 is 9698207.

It can be written as a sum of positive squares in 6 ways, for example, as 717409 + 69572281 = 847^2 + 8341^2 .

It is a super-2 number, since 2×70289690² = 9881281040592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70289699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36266 + ... + 38154.

Almost surely, 2^70289690 is an apocalyptic number.

70289690 is a deficient number, since it is larger than the sum of its proper divisors (58407970).

70289690 is a wasteful number, since it uses less digits than its factorization.

70289690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 70289690 is about 8383.8946796820. The cubic root of 70289690 is about 412.6962690117.

The spelling of 70289690 in words is "seventy million, two hundred eighty-nine thousand, six hundred ninety".