70399563 has 8 divisors (see below), whose sum is σ = 101086608. Its totient is φ = 43322784.

The previous prime is 70399487. The next prime is 70399591. The reversal of 70399563 is 36599307.

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

It is not a de Polignac number, because 70399563 - 2¹⁰ = 70398539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70399663) 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, 902520 + ... + 902597.

It is an arithmetic number, because the mean of its divisors is an integer number (12635826).

Almost surely, 2^70399563 is an apocalyptic number.

70399563 is a deficient number, since it is larger than the sum of its proper divisors (30687045).

70399563 is a wasteful number, since it uses less digits than its factorization.

70399563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805133.

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 70399563 is about 8390.4447438738. Note that the first 3 decimals coincide. The cubic root of 70399563 is about 412.9111918126.

The spelling of 70399563 in words is "seventy million, three hundred ninety-nine thousand, five hundred sixty-three".