662742538 has 8 divisors (see below), whose sum is σ = 994623588. Its totient is φ = 331201344.

The previous prime is 662742527. The next prime is 662742547. The reversal of 662742538 is 835247266.

It can be written as a sum of positive squares in 2 ways, for example, as 652649209 + 10093329 = 25547^2 + 3177^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 662742494 and 662742503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80031 + ... + 87922.

Almost surely, 2^662742538 is an apocalyptic number.

662742538 is a deficient number, since it is larger than the sum of its proper divisors (331881050).

662742538 is a wasteful number, since it uses less digits than its factorization.

662742538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169928.

The product of its digits is 483840, while the sum is 43.

The square root of 662742538 is about 25743.7863959442. The cubic root of 662742538 is about 871.8630696038.

The spelling of 662742538 in words is "six hundred sixty-two million, seven hundred forty-two thousand, five hundred thirty-eight".