214978653 has 24 divisors (see below), whose sum is σ = 327314520. Its totient is φ = 135757440.

The previous prime is 214978639. The next prime is 214978657. The reversal of 214978653 is 356879412.

It can be written as a sum of positive squares in 4 ways, for example, as 82682649 + 132296004 = 9093^2 + 11502^2 .

It is not a de Polignac number, because 214978653 - 2¹⁶ = 214913117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214978599 and 214978608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214978657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6063 + ... + 21603.

It is an arithmetic number, because the mean of its divisors is an integer number (13638105).

Almost surely, 2^214978653 is an apocalyptic number.

It is an amenable number.

214978653 is a deficient number, since it is larger than the sum of its proper divisors (112335867).

214978653 is a wasteful number, since it uses less digits than its factorization.

214978653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15629 (or 15626 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 214978653 is about 14662.1503538874. The cubic root of 214978653 is about 599.0528138508.

The spelling of 214978653 in words is "two hundred fourteen million, nine hundred seventy-eight thousand, six hundred fifty-three".