67620665 has 16 divisors (see below), whose sum is σ = 92870400. Its totient is φ = 46301760.

The previous prime is 67620659. The next prime is 67620671. The reversal of 67620665 is 56602676.

It is an interprime number because it is at equal distance from previous prime (67620659) and next prime (67620671).

It is not a de Polignac number, because 67620665 - 2¹⁰ = 67619641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47636 + ... + 49034.

It is an arithmetic number, because the mean of its divisors is an integer number (5804400).

Almost surely, 2^67620665 is an apocalyptic number.

It is an amenable number.

67620665 is a deficient number, since it is larger than the sum of its proper divisors (25249735).

67620665 is a wasteful number, since it uses less digits than its factorization.

67620665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 67620665 is about 8223.1785217153. The cubic root of 67620665 is about 407.4051167298.

The spelling of 67620665 in words is "sixty-seven million, six hundred twenty thousand, six hundred sixty-five".