497798786 has 4 divisors (see below), whose sum is σ = 746698182. Its totient is φ = 248899392.

The previous prime is 497798779. The next prime is 497798789. The reversal of 497798786 is 687897794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687897794 = 2 ⋅343948897.

It can be written as a sum of positive squares in only one way, i.e., 481144225 + 16654561 = 21935^2 + 4081^2 .

It is not an unprimeable number, because it can be changed into a prime (497798789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124449695 + ... + 124449698.

Almost surely, 2^497798786 is an apocalyptic number.

497798786 is a deficient number, since it is larger than the sum of its proper divisors (248899396).

497798786 is a wasteful number, since it uses less digits than its factorization.

497798786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248899395.

The product of its digits is 42674688, while the sum is 65.

The square root of 497798786 is about 22311.4048414707. The cubic root of 497798786 is about 792.5340760955.

The spelling of 497798786 in words is "four hundred ninety-seven million, seven hundred ninety-eight thousand, seven hundred eighty-six".