499261666 has 8 divisors (see below), whose sum is σ = 749162844. Its totient is φ = 249540720.

The previous prime is 499261663. The next prime is 499261681. The reversal of 499261666 is 666162994.

It can be written as a sum of positive squares in 2 ways, for example, as 486864225 + 12397441 = 22065^2 + 3521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×499261666² = 498524422274191112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (499261663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37905 + ... + 49348.

Almost surely, 2^499261666 is an apocalyptic number.

499261666 is a deficient number, since it is larger than the sum of its proper divisors (249901178).

499261666 is a wasteful number, since it uses less digits than its factorization.

499261666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90116.

The product of its digits is 839808, while the sum is 49.

The square root of 499261666 is about 22344.1640255347. The cubic root of 499261666 is about 793.3096561365.

The spelling of 499261666 in words is "four hundred ninety-nine million, two hundred sixty-one thousand, six hundred sixty-six".