2640285698 has 8 divisors (see below), whose sum is σ = 3984144192. Its totient is φ = 1312237636.

The previous prime is 2640285649. The next prime is 2640285707. The reversal of 2640285698 is 8965820462.

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

It is a super-2 number, since 2×2640285698² = 13942217134126694408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3952190 + ... + 3952857.

It is an arithmetic number, because the mean of its divisors is an integer number (498018024).

Almost surely, 2^2640285698 is an apocalyptic number.

2640285698 is a deficient number, since it is larger than the sum of its proper divisors (1343858494).

2640285698 is a wasteful number, since it uses less digits than its factorization.

2640285698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905216.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 2640285698 is about 51383.7104343390. The cubic root of 2640285698 is about 1382.1345001154.

The spelling of 2640285698 in words is "two billion, six hundred forty million, two hundred eighty-five thousand, six hundred ninety-eight".