2215655670 has 32 divisors (see below), whose sum is σ = 5430716928. Its totient is φ = 578270048.

The previous prime is 2215655657. The next prime is 2215655671. The reversal of 2215655670 is 765565122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215655671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784284 + ... + 787103.

It is an arithmetic number, because the mean of its divisors is an integer number (169709904).

Almost surely, 2^2215655670 is an apocalyptic number.

2215655670 is an abundant number, since it is smaller than the sum of its proper divisors (3215061258).

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

2215655670 is a wasteful number, since it uses less digits than its factorization.

2215655670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571444.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 2215655670 is about 47070.7517467057. The cubic root of 2215655670 is about 1303.6692531100.

The spelling of 2215655670 in words is "two billion, two hundred fifteen million, six hundred fifty-five thousand, six hundred seventy".