70631663 has 8 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 69423640.

The previous prime is 70631611. The next prime is 70631681. The reversal of 70631663 is 36613607.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70631663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70631063) 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, 11498 + ... + 16536.

It is an arithmetic number, because the mean of its divisors is an integer number (8981280).

Almost surely, 2^70631663 is an apocalyptic number.

70631663 is a deficient number, since it is larger than the sum of its proper divisors (1218577).

70631663 is a wasteful number, since it uses less digits than its factorization.

70631663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 70631663 is about 8404.2645722276. The cubic root of 70631663 is about 413.3644690530.

The spelling of 70631663 in words is "seventy million, six hundred thirty-one thousand, six hundred sixty-three".