67290881 has 8 divisors (see below), whose sum is σ = 78779904. Its totient is φ = 56270880.

The previous prime is 67290877. The next prime is 67290907. The reversal of 67290881 is 18809276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67290881 - 2² = 67290877 is a prime.

It is a super-2 number, since 2×67290881² = 9056125331512322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (67290851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116945 + ... + 117518.

It is an arithmetic number, because the mean of its divisors is an integer number (9847488).

Almost surely, 2^67290881 is an apocalyptic number.

It is an amenable number.

67290881 is a deficient number, since it is larger than the sum of its proper divisors (11489023).

67290881 is a wasteful number, since it uses less digits than its factorization.

67290881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234511.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 67290881 is about 8203.1019133008. The cubic root of 67290881 is about 406.7417361938.

The spelling of 67290881 in words is "sixty-seven million, two hundred ninety thousand, eight hundred eighty-one".