70998663 has 4 divisors (see below), whose sum is σ = 94664888. Its totient is φ = 47332440.

The previous prime is 70998637. The next prime is 70998667. The reversal of 70998663 is 36689907.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-70998663 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 (70998667) 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, 11833108 + ... + 11833113.

It is an arithmetic number, because the mean of its divisors is an integer number (23666222).

Almost surely, 2^70998663 is an apocalyptic number.

70998663 is a deficient number, since it is larger than the sum of its proper divisors (23666225).

70998663 is a wasteful number, since it uses less digits than its factorization.

70998663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23666224.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 70998663 is about 8426.0704364490. The cubic root of 70998663 is about 414.0791757366.

The spelling of 70998663 in words is "seventy million, nine hundred ninety-eight thousand, six hundred sixty-three".