68699437 has 2 divisors, whose sum is σ = 68699438. Its totient is φ = 68699436.

The previous prime is 68699429. The next prime is 68699443. The reversal of 68699437 is 73499686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65383396 + 3316041 = 8086^2 + 1821^2 .

It is a cyclic number.

It is not a de Polignac number, because 68699437 - 2³ = 68699429 is a prime.

It is a super-2 number, since 2×68699437² = 9439225288233938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68699467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34349718 + 34349719.

It is an arithmetic number, because the mean of its divisors is an integer number (34349719).

Almost surely, 2^68699437 is an apocalyptic number.

It is an amenable number.

68699437 is a deficient number, since it is larger than the sum of its proper divisors (1).

68699437 is an equidigital number, since it uses as much as digits as its factorization.

68699437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 68699437 is about 8288.5123514416. The cubic root of 68699437 is about 409.5601807509.

The spelling of 68699437 in words is "sixty-eight million, six hundred ninety-nine thousand, four hundred thirty-seven".