67790531 has 4 divisors (see below), whose sum is σ = 68022192. Its totient is φ = 67558872.

The previous prime is 67790519. The next prime is 67790539. The reversal of 67790531 is 13509776.

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 67790531 - 2¹⁰ = 67789507 is a prime.

It is a super-2 number, since 2×67790531² = 9191112186523922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67790539) 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, 115391 + ... + 115976.

It is an arithmetic number, because the mean of its divisors is an integer number (17005548).

Almost surely, 2^67790531 is an apocalyptic number.

67790531 is a deficient number, since it is larger than the sum of its proper divisors (231661).

67790531 is a wasteful number, since it uses less digits than its factorization.

67790531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231660.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 67790531 is about 8233.5005313657. The cubic root of 67790531 is about 407.7459711627.

The spelling of 67790531 in words is "sixty-seven million, seven hundred ninety thousand, five hundred thirty-one".