491970662 has 4 divisors (see below), whose sum is σ = 737955996. Its totient is φ = 245985330.

The previous prime is 491970643. The next prime is 491970671. The reversal of 491970662 is 266079194.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122992664 + ... + 122992667.

It is an arithmetic number, because the mean of its divisors is an integer number (184488999).

Almost surely, 2^491970662 is an apocalyptic number.

491970662 is a deficient number, since it is larger than the sum of its proper divisors (245985334).

491970662 is a wasteful number, since it uses less digits than its factorization.

491970662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245985333.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 491970662 is about 22180.4116733662. The cubic root of 491970662 is about 789.4289854348.

The spelling of 491970662 in words is "four hundred ninety-one million, nine hundred seventy thousand, six hundred sixty-two".