67672531 has 2 divisors, whose sum is σ = 67672532. Its totient is φ = 67672530.

The previous prime is 67672523. The next prime is 67672651. The reversal of 67672531 is 13527676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67672531 - 2³ = 67672523 is a prime.

It is a super-2 number, since 2×67672531² = 9159142903891922, which contains 22 as substring.

It is equal to p_3989170 and since 67672531 and 3989170 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (67672511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33836265 + 33836266.

It is an arithmetic number, because the mean of its divisors is an integer number (33836266).

Almost surely, 2^67672531 is an apocalyptic number.

67672531 is a deficient number, since it is larger than the sum of its proper divisors (1).

67672531 is an equidigital number, since it uses as much as digits as its factorization.

67672531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 37.

The square root of 67672531 is about 8226.3315639476. The cubic root of 67672531 is about 407.5092519259.

The spelling of 67672531 in words is "sixty-seven million, six hundred seventy-two thousand, five hundred thirty-one".