67663131 has 4 divisors (see below), whose sum is σ = 90217512. Its totient is φ = 45108752.

The previous prime is 67663129. The next prime is 67663133. The reversal of 67663131 is 13136676.

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

It is an interprime number because it is at equal distance from previous prime (67663129) and next prime (67663133).

It is a cyclic number.

It is not a de Polignac number, because 67663131 - 2¹ = 67663129 is a prime.

It is a super-2 number, since 2×67663131² = 9156598593446322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67663092 and 67663101.

It is not an unprimeable number, because it can be changed into a prime (67663133) 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 in 3 ways as a sum of consecutive naturals, for example, 11277186 + ... + 11277191.

It is an arithmetic number, because the mean of its divisors is an integer number (22554378).

Almost surely, 2^67663131 is an apocalyptic number.

67663131 is a deficient number, since it is larger than the sum of its proper divisors (22554381).

67663131 is a wasteful number, since it uses less digits than its factorization.

67663131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22554380.

The product of its digits is 13608, while the sum is 33.

The square root of 67663131 is about 8225.7602080294. The cubic root of 67663131 is about 407.4903828009.

The spelling of 67663131 in words is "sixty-seven million, six hundred sixty-three thousand, one hundred thirty-one".