497206906641 has 9 divisors (see below), whose sum is σ = 718190809609. Its totient is φ = 331469860836.

The previous prime is 497206906627. The next prime is 497206906657. The reversal of 497206906641 is 146609602794.

It is a happy number.

The square root of 497206906641 is 705129.

It is a perfect power (a square), and thus also a powerful number.

497206906641 is a `hidden beast` number, since 497 + 2 + 0 + 6 + 90 + 6 + 64 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 497206906641 - 2¹³ = 497206898449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497206906681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1997866 + ... + 2232908.

Almost surely, 2^497206906641 is an apocalyptic number.

497206906641 is the 705129-th square number.

497206906641 is the 352565-th centered octagonal number.

It is an amenable number.

497206906641 is a deficient number, since it is larger than the sum of its proper divisors (220983902968).

497206906641 is an frugal number, since it uses more digits than its factorization.

497206906641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470092 (or 235046 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 497206906641 in words is "four hundred ninety-seven billion, two hundred six million, nine hundred six thousand, six hundred forty-one".