70149631 has 4 divisors (see below), whose sum is σ = 70200352. Its totient is φ = 70098912.

The previous prime is 70149623. The next prime is 70149659. The reversal of 70149631 is 13694107.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70149631 - 2³ = 70149623 is a prime.

It is a super-2 number, since 2×70149631² = 9841941458872322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70149593 and 70149602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70149601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23226 + ... + 26071.

It is an arithmetic number, because the mean of its divisors is an integer number (17550088).

It is a Poulet number, since it divides 2^70149630-1.

Almost surely, 2^70149631 is an apocalyptic number.

70149631 is a deficient number, since it is larger than the sum of its proper divisors (50721).

70149631 is a wasteful number, since it uses less digits than its factorization.

70149631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50720.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 70149631 is about 8375.5376543837. The cubic root of 70149631 is about 412.4219743453.

The spelling of 70149631 in words is "seventy million, one hundred forty-nine thousand, six hundred thirty-one".