652987381 has 2 divisors, whose sum is σ = 652987382. Its totient is φ = 652987380.

The previous prime is 652987339. The next prime is 652987451. The reversal of 652987381 is 183789256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537080625 + 115906756 = 23175^2 + 10766^2 .

It is a cyclic number.

It is not a de Polignac number, because 652987381 - 2¹³ = 652979189 is a prime.

It is a super-2 number, since 2×652987381² = 852785039490478322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652987301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326493690 + 326493691.

It is an arithmetic number, because the mean of its divisors is an integer number (326493691).

Almost surely, 2^652987381 is an apocalyptic number.

It is an amenable number.

652987381 is a deficient number, since it is larger than the sum of its proper divisors (1).

652987381 is an equidigital number, since it uses as much as digits as its factorization.

652987381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 652987381 is about 25553.6177673534. The cubic root of 652987381 is about 867.5641473271.

The spelling of 652987381 in words is "six hundred fifty-two million, nine hundred eighty-seven thousand, three hundred eighty-one".