496618991 has 4 divisors (see below), whose sum is σ = 541766184. Its totient is φ = 451471800.

The previous prime is 496618949. The next prime is 496619041. The reversal of 496618991 is 199816694.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 496618991 - 2¹⁴ = 496602607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (496618391) 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, 22573580 + ... + 22573601.

It is an arithmetic number, because the mean of its divisors is an integer number (135441546).

Almost surely, 2^496618991 is an apocalyptic number.

496618991 is a deficient number, since it is larger than the sum of its proper divisors (45147193).

496618991 is a wasteful number, since it uses less digits than its factorization.

496618991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45147192.

The product of its digits is 839808, while the sum is 53.

The square root of 496618991 is about 22284.9498765422. The cubic root of 496618991 is about 791.9074725895.

The spelling of 496618991 in words is "four hundred ninety-six million, six hundred eighteen thousand, nine hundred ninety-one".