2087170406 has 16 divisors (see below), whose sum is σ = 3297096960. Its totient is φ = 988190280.

The previous prime is 2087170391. The next prime is 2087170409. The reversal of 2087170406 is 6040717802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087170409) 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, 75935 + ... + 99701.

It is an arithmetic number, because the mean of its divisors is an integer number (206068560).

Almost surely, 2^2087170406 is an apocalyptic number.

2087170406 is a deficient number, since it is larger than the sum of its proper divisors (1209926554).

2087170406 is a wasteful number, since it uses less digits than its factorization.

2087170406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26099.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 2087170406 is about 45685.5601476002. The cubic root of 2087170406 is about 1277.9660090897.

The spelling of 2087170406 in words is "two billion, eighty-seven million, one hundred seventy thousand, four hundred six".