2147670644 has 24 divisors (see below), whose sum is σ = 4296458880. Its totient is φ = 920190816.

The previous prime is 2147670641. The next prime is 2147670677. The reversal of 2147670644 is 4460767412.

It is a super-2 number, since 2×2147670644² = 9224978390198749472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147670641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138137 + ... + 152895.

It is an arithmetic number, because the mean of its divisors is an integer number (179019120).

Almost surely, 2^2147670644 is an apocalyptic number.

It is an amenable number.

2147670644 is an abundant number, since it is smaller than the sum of its proper divisors (2148788236).

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

2147670644 is a wasteful number, since it uses less digits than its factorization.

2147670644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19967 (or 19965 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 2147670644 is about 46342.9675786953. The cubic root of 2147670644 is about 1290.1966016482.

The spelling of 2147670644 in words is "two billion, one hundred forty-seven million, six hundred seventy thousand, six hundred forty-four".