2666498840 has 32 divisors (see below), whose sum is σ = 6011184960. Its totient is φ = 1064544000.

The previous prime is 2666498839. The next prime is 2666498851. The reversal of 2666498840 is 488946662.

It is a super-2 number, since 2×2666498840² = 14220432127442691200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43136 + ... + 84815.

It is an arithmetic number, because the mean of its divisors is an integer number (187849530).

Almost surely, 2^2666498840 is an apocalyptic number.

2666498840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666498840 is an abundant number, since it is smaller than the sum of its proper divisors (3344686120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666498840 is a wasteful number, since it uses less digits than its factorization.

2666498840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128483 (or 128479 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The square root of 2666498840 is about 51638.1529491519. The cubic root of 2666498840 is about 1386.6934569631.

The spelling of 2666498840 in words is "two billion, six hundred sixty-six million, four hundred ninety-eight thousand, eight hundred forty".