2171087698 has 16 divisors (see below), whose sum is σ = 3559489920. Its totient is φ = 987083856.

The previous prime is 2171087693. The next prime is 2171087713. The reversal of 2171087698 is 8967801712.

It is not an unprimeable number, because it can be changed into a prime (2171087693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621418 + ... + 624901.

It is an arithmetic number, because the mean of its divisors is an integer number (222468120).

Almost surely, 2^2171087698 is an apocalyptic number.

2171087698 is a deficient number, since it is larger than the sum of its proper divisors (1388402222).

2171087698 is a wasteful number, since it uses less digits than its factorization.

2171087698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246401.

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 2171087698 is about 46594.9321063997. The cubic root of 2171087698 is about 1294.8688662355.

The spelling of 2171087698 in words is "two billion, one hundred seventy-one million, eighty-seven thousand, six hundred ninety-eight".