70331563 has 4 divisors (see below), whose sum is σ = 70540600. Its totient is φ = 70122528.

The previous prime is 70331537. The next prime is 70331587. The reversal of 70331563 is 36513307.

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 70331563 - 2¹⁷ = 70200491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70331663) 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, 104013 + ... + 104686.

It is an arithmetic number, because the mean of its divisors is an integer number (17635150).

Almost surely, 2^70331563 is an apocalyptic number.

70331563 is a deficient number, since it is larger than the sum of its proper divisors (209037).

70331563 is a wasteful number, since it uses less digits than its factorization.

70331563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209036.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 70331563 is about 8386.3915362926. The cubic root of 70331563 is about 412.7782032683.

The spelling of 70331563 in words is "seventy million, three hundred thirty-one thousand, five hundred sixty-three".