497691 has 8 divisors (see below), whose sum is σ = 737360. Its totient is φ = 331776.

The previous prime is 497689. The next prime is 497701. The reversal of 497691 is 196794.

It is not a de Polignac number, because 497691 - 2¹ = 497689 is a prime.

It is a super-3 number, since 3×497691³ = 369828704733331113, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 497691.

It is not an unprimeable number, because it can be changed into a prime (497671) 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, 9190 + ... + 9243.

It is an arithmetic number, because the mean of its divisors is an integer number (92170).

2⁴⁹⁷⁶⁹¹ is an apocalyptic number.

497691 is a deficient number, since it is larger than the sum of its proper divisors (239669).

497691 is a wasteful number, since it uses less digits than its factorization.

497691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18442 (or 18436 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 497691 is about 705.4721823006. The cubic root of 497691 is about 79.2476870757.

It can be divided in two parts, 49769 and 1, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 497691 in words is "four hundred ninety-seven thousand, six hundred ninety-one".