6900660240 has 40 divisors (see below), whose sum is σ = 21392047488. Its totient is φ = 1840176000.

The previous prime is 6900660227. The next prime is 6900660251. The reversal of 6900660240 is 420660096.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×6900660240³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 14376136 + ... + 14376615.

Almost surely, 2^6900660240 is an apocalyptic number.

6900660240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6900660240 is an abundant number, since it is smaller than the sum of its proper divisors (14491387248).

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

6900660240 is a wasteful number, since it uses less digits than its factorization.

6900660240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28752767 (or 28752761 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6900660240 is about 83070.2127118981. The cubic root of 6900660240 is about 1903.8389822759.

The spelling of 6900660240 in words is "six billion, nine hundred million, six hundred sixty thousand, two hundred forty".