68550631 has 2 divisors, whose sum is σ = 68550632. Its totient is φ = 68550630.

The previous prime is 68550623. The next prime is 68550683. The reversal of 68550631 is 13605586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68550631 - 2³ = 68550623 is a prime.

It is a super-2 number, since 2×68550631² = 9398378020996322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68550611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34275315 + 34275316.

It is an arithmetic number, because the mean of its divisors is an integer number (34275316).

Almost surely, 2^68550631 is an apocalyptic number.

68550631 is a deficient number, since it is larger than the sum of its proper divisors (1).

68550631 is an equidigital number, since it uses as much as digits as its factorization.

68550631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 68550631 is about 8279.5308441964. The cubic root of 68550631 is about 409.2642585370.

The spelling of 68550631 in words is "sixty-eight million, five hundred fifty thousand, six hundred thirty-one".