497658 has 48 divisors (see below), whose sum is σ = 1237824. Its totient is φ = 130560.

The previous prime is 497633. The next prime is 497659. The reversal of 497658 is 856794.

Its product of digits (60480) is a multiple of the sum of its prime divisors (70).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 497658.

It is not an unprimeable number, because it can be changed into a prime (497659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12118 + ... + 12158.

It is an arithmetic number, because the mean of its divisors is an integer number (25788).

497658 is a Friedman number, since it can be written as (9-7)*(8+4)^5-6, using all its digits and the basic arithmetic operations.

2⁴⁹⁷⁶⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618912).

497658 is an abundant number, since it is smaller than the sum of its proper divisors (740166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

497658 is a wasteful number, since it uses less digits than its factorization.

497658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 70 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 497658 is about 705.4487933224. The cubic root of 497658 is about 79.2459354993.

The spelling of 497658 in words is "four hundred ninety-seven thousand, six hundred fifty-eight".