7005681540 has 144 divisors (see below), whose sum is σ = 24965793216. Its totient is φ = 1567699200.

The previous prime is 7005681493. The next prime is 7005681601. The reversal of 7005681540 is 451865007.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7005681495 and 7005681504.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110346 + ... + 161825.

It is an arithmetic number, because the mean of its divisors is an integer number (173373564).

Almost surely, 2^7005681540 is an apocalyptic number.

It is an amenable number.

7005681540 is an abundant number, since it is smaller than the sum of its proper divisors (17960111676).

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

7005681540 is a wasteful number, since it uses less digits than its factorization.

7005681540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272210 (or 272205 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 7005681540 is about 83699.9494623503. The cubic root of 7005681540 is about 1913.4485854352.

The spelling of 7005681540 in words is "seven billion, five million, six hundred eighty-one thousand, five hundred forty".