67630505 has 8 divisors (see below), whose sum is σ = 85930632. Its totient is φ = 50921728.

The previous prime is 67630463. The next prime is 67630513. The reversal of 67630505 is 50503676.

It can be written as a sum of positive squares in 4 ways, for example, as 12752041 + 54878464 = 3571^2 + 7408^2 .

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 67630505 - 2⁶ = 67630441 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397742 + ... + 397911.

It is an arithmetic number, because the mean of its divisors is an integer number (10741329).

Almost surely, 2^67630505 is an apocalyptic number.

It is an amenable number.

67630505 is a deficient number, since it is larger than the sum of its proper divisors (18300127).

67630505 is a wasteful number, since it uses less digits than its factorization.

67630505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795675.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 67630505 is about 8223.7768087418. The cubic root of 67630505 is about 407.4248773159.

The spelling of 67630505 in words is "sixty-seven million, six hundred thirty thousand, five hundred five".