67064631 has 4 divisors (see below), whose sum is σ = 89419512. Its totient is φ = 44709752.

The previous prime is 67064611. The next prime is 67064633. The reversal of 67064631 is 13646076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67064631 - 2¹⁸ = 66802487 is a prime.

It is a super-2 number, since 2×67064631² = 8995329462332322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67064592 and 67064601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67064633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11177436 + ... + 11177441.

It is an arithmetic number, because the mean of its divisors is an integer number (22354878).

Almost surely, 2^67064631 is an apocalyptic number.

67064631 is a deficient number, since it is larger than the sum of its proper divisors (22354881).

67064631 is a wasteful number, since it uses less digits than its factorization.

67064631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22354880.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 67064631 is about 8189.2997869171. The cubic root of 67064631 is about 406.2853660414.

The spelling of 67064631 in words is "sixty-seven million, sixty-four thousand, six hundred thirty-one".