7920667 has 8 divisors (see below), whose sum is σ = 8249472. Its totient is φ = 7598400.

The previous prime is 7920641. The next prime is 7920677. The reversal of 7920667 is 7660297.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7920667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7920677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918 + ... + 4084.

It is an arithmetic number, because the mean of its divisors is an integer number (1031184).

Almost surely, 2^7920667 is an apocalyptic number.

7920667 is a deficient number, since it is larger than the sum of its proper divisors (328805).

7920667 is a wasteful number, since it uses less digits than its factorization.

7920667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 7920667 is about 2814.3679574640. The cubic root of 7920667 is about 199.3366942259.

The spelling of 7920667 in words is "seven million, nine hundred twenty thousand, six hundred sixty-seven".