497666642 has 16 divisors (see below), whose sum is σ = 820584864. Its totient is φ = 224484000.

The previous prime is 497666633. The next prime is 497666657. The reversal of 497666642 is 246666794.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83459 + ... + 89222.

It is an arithmetic number, because the mean of its divisors is an integer number (51286554).

Almost surely, 2^497666642 is an apocalyptic number.

497666642 is a deficient number, since it is larger than the sum of its proper divisors (322918222).

497666642 is a wasteful number, since it uses less digits than its factorization.

497666642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172825.

The product of its digits is 2612736, while the sum is 50.

The square root of 497666642 is about 22308.4432894812. The cubic root of 497666642 is about 792.4639420747.

The spelling of 497666642 in words is "four hundred ninety-seven million, six hundred sixty-six thousand, six hundred forty-two".