662743631 has 8 divisors (see below), whose sum is σ = 723472128. Its totient is φ = 602095000.

The previous prime is 662743621. The next prime is 662743651. The reversal of 662743631 is 136347266.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662743631 is a prime.

It is a super-2 number, since 2×662743631² = 878458240862128322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662743621) 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, 1895 + ... + 36456.

It is an arithmetic number, because the mean of its divisors is an integer number (90434016).

Almost surely, 2^662743631 is an apocalyptic number.

662743631 is a deficient number, since it is larger than the sum of its proper divisors (60728497).

662743631 is a wasteful number, since it uses less digits than its factorization.

662743631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39933.

The product of its digits is 108864, while the sum is 38.

The square root of 662743631 is about 25743.8076243589. The cubic root of 662743631 is about 871.8635488979.

The spelling of 662743631 in words is "six hundred sixty-two million, seven hundred forty-three thousand, six hundred thirty-one".