214976645 has 32 divisors (see below), whose sum is σ = 295692768. Its totient is φ = 148635648.

The previous prime is 214976609. The next prime is 214976677. The reversal of 214976645 is 546679412.

It can be written as a sum of positive squares in 16 ways, for example, as 3157729 + 211818916 = 1777^2 + 14554^2 .

It is a cyclic number.

It is not a de Polignac number, because 214976645 - 2⁸ = 214976389 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 214976596 and 214976605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283607 + ... + 284363.

It is an arithmetic number, because the mean of its divisors is an integer number (9240399).

Almost surely, 2^214976645 is an apocalyptic number.

It is an amenable number.

214976645 is a deficient number, since it is larger than the sum of its proper divisors (80716123).

214976645 is a wasteful number, since it uses less digits than its factorization.

214976645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049.

The product of its digits is 362880, while the sum is 44.

The square root of 214976645 is about 14662.0818780963. The cubic root of 214976645 is about 599.0509487016.

The spelling of 214976645 in words is "two hundred fourteen million, nine hundred seventy-six thousand, six hundred forty-five".