498602861 has 4 divisors (see below), whose sum is σ = 512078652. Its totient is φ = 485127072.

The previous prime is 498602857. The next prime is 498602893. The reversal of 498602861 is 168206894.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 458216836 + 40386025 = 21406^2 + 6355^2 .

It is a cyclic number.

It is not a de Polignac number, because 498602861 - 2² = 498602857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498602851) 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, 6737840 + ... + 6737913.

It is an arithmetic number, because the mean of its divisors is an integer number (128019663).

Almost surely, 2^498602861 is an apocalyptic number.

It is an amenable number.

498602861 is a deficient number, since it is larger than the sum of its proper divisors (13475791).

498602861 is a wasteful number, since it uses less digits than its factorization.

498602861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13475790.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 498602861 is about 22329.4169426790. The cubic root of 498602861 is about 792.9605630287.

The spelling of 498602861 in words is "four hundred ninety-eight million, six hundred two thousand, eight hundred sixty-one".