662924947 has 4 divisors (see below), whose sum is σ = 663940800. Its totient is φ = 661909096.

The previous prime is 662924939. The next prime is 662924957. The reversal of 662924947 is 749429266.

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 662924947 - 2³ = 662924939 is a prime.

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 662924947.

It is not an unprimeable number, because it can be changed into a prime (662924917) 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, 506947 + ... + 508252.

It is an arithmetic number, because the mean of its divisors is an integer number (165985200).

Almost surely, 2^662924947 is an apocalyptic number.

662924947 is a deficient number, since it is larger than the sum of its proper divisors (1015853).

662924947 is a wasteful number, since it uses less digits than its factorization.

662924947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015852.

The product of its digits is 1306368, while the sum is 49.

The square root of 662924947 is about 25747.3289294249. The cubic root of 662924947 is about 871.9430509304.

The spelling of 662924947 in words is "six hundred sixty-two million, nine hundred twenty-four thousand, nine hundred forty-seven".