2217661532 has 24 divisors (see below), whose sum is σ = 4180176000. Its totient is φ = 1026040176.

The previous prime is 2217661531. The next prime is 2217661549. The reversal of 2217661532 is 2351667122.

It is a junction number, because it is equal to n+sod(n) for n = 2217661492 and 2217661501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217661531) 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, 336032 + ... + 342567.

It is an arithmetic number, because the mean of its divisors is an integer number (174174000).

Almost surely, 2^2217661532 is an apocalyptic number.

It is an amenable number.

2217661532 is a deficient number, since it is larger than the sum of its proper divisors (1962514468).

2217661532 is a wasteful number, since it uses less digits than its factorization.

2217661532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678665 (or 678663 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 2217661532 is about 47092.0538095335. The cubic root of 2217661532 is about 1304.0625440474.

The spelling of 2217661532 in words is "two billion, two hundred seventeen million, six hundred sixty-one thousand, five hundred thirty-two".