2147670645 has 16 divisors (see below), whose sum is σ = 3444040512. Its totient is φ = 1142835200.

The previous prime is 2147670641. The next prime is 2147670677. The reversal of 2147670645 is 5460767412.

It is not a de Polignac number, because 2147670645 - 2² = 2147670641 is a prime.

It is a super-2 number, since 2×2147670645² = 9224978398789432050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2147670597 and 2147670606.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154956 + ... + 168245.

It is an arithmetic number, because the mean of its divisors is an integer number (215252532).

Almost surely, 2^2147670645 is an apocalyptic number.

It is an amenable number.

2147670645 is a deficient number, since it is larger than the sum of its proper divisors (1296369867).

2147670645 is a wasteful number, since it uses less digits than its factorization.

2147670645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323652.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 2147670645 is about 46342.9675894844. The cubic root of 2147670645 is about 1290.1966018485.

The spelling of 2147670645 in words is "two billion, one hundred forty-seven million, six hundred seventy thousand, six hundred forty-five".