498638261 has 8 divisors (see below), whose sum is σ = 572599200. Its totient is φ = 429449040.

The previous prime is 498638249. The next prime is 498638279. The reversal of 498638261 is 162836894.

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

It is a cyclic number.

It is not a de Polignac number, because 498638261 - 2⁶ = 498638197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498638221) 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, 1192706 + ... + 1193123.

It is an arithmetic number, because the mean of its divisors is an integer number (71574900).

Almost surely, 2^498638261 is an apocalyptic number.

It is an amenable number.

498638261 is a deficient number, since it is larger than the sum of its proper divisors (73960939).

498638261 is a wasteful number, since it uses less digits than its factorization.

498638261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385859.

The product of its digits is 497664, while the sum is 47.

The square root of 498638261 is about 22330.2096049276. The cubic root of 498638261 is about 792.9793288921.

The spelling of 498638261 in words is "four hundred ninety-eight million, six hundred thirty-eight thousand, two hundred sixty-one".