70115690 has 16 divisors (see below), whose sum is σ = 126507528. Its totient is φ = 27979776.

The previous prime is 70115677. The next prime is 70115693. The reversal of 70115690 is 9651107.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61606801 + 8508889 = 7849^2 + 2917^2 .

It is a super-2 number, since 2×70115690² = 9832419968352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70115693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3767 + ... + 12426.

Almost surely, 2^70115690 is an apocalyptic number.

70115690 is a deficient number, since it is larger than the sum of its proper divisors (56391838).

70115690 is a wasteful number, since it uses less digits than its factorization.

70115690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16633.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 70115690 is about 8373.5112109557. The cubic root of 70115690 is about 412.3554485859.

Adding to 70115690 its reverse (9651107), we get a palindrome (79766797).

It can be divided in two parts, 70 and 115690, that multiplied together give a triangular number (8098300 = T₄₀₂₄).

The spelling of 70115690 in words is "seventy million, one hundred fifteen thousand, six hundred ninety".