67538623 has 2 divisors, whose sum is σ = 67538624. Its totient is φ = 67538622.

The previous prime is 67538617. The next prime is 67538633. The reversal of 67538623 is 32683576.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67538623 - 2⁵ = 67538591 is a prime.

It is a super-2 number, since 2×67538623² = 9122931193472258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67538633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33769311 + 33769312.

It is an arithmetic number, because the mean of its divisors is an integer number (33769312).

Almost surely, 2^67538623 is an apocalyptic number.

67538623 is a deficient number, since it is larger than the sum of its proper divisors (1).

67538623 is an equidigital number, since it uses as much as digits as its factorization.

67538623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 67538623 is about 8218.1885473625. The cubic root of 67538623 is about 407.2402861647.

It can be divided in two parts, 6753 and 8623, that added together give a square (15376 = 124²).

The spelling of 67538623 in words is "sixty-seven million, five hundred thirty-eight thousand, six hundred twenty-three".