70461631 has 4 divisors (see below), whose sum is σ = 70616272. Its totient is φ = 70306992.

The previous prime is 70461613. The next prime is 70461637. The reversal of 70461631 is 13616407.

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 70461631 - 2¹¹ = 70459583 is a prime.

It is a super-2 number, since 2×70461631² = 9929682886360322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70461631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70461637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76635 + ... + 77548.

It is an arithmetic number, because the mean of its divisors is an integer number (17654068).

Almost surely, 2^70461631 is an apocalyptic number.

70461631 is a deficient number, since it is larger than the sum of its proper divisors (154641).

70461631 is a wasteful number, since it uses less digits than its factorization.

70461631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154640.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 70461631 is about 8394.1426602125. The cubic root of 70461631 is about 413.0325043256.

The spelling of 70461631 in words is "seventy million, four hundred sixty-one thousand, six hundred thirty-one".