7620667 has 4 divisors (see below), whose sum is σ = 7635816. Its totient is φ = 7605520.

The previous prime is 7620619. The next prime is 7620671. The reversal of 7620667 is 7660267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7660267 = 173 ⋅44279.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7620667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7620677) 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, 6793 + ... + 7834.

It is an arithmetic number, because the mean of its divisors is an integer number (1908954).

Almost surely, 2^7620667 is an apocalyptic number.

7620667 is a deficient number, since it is larger than the sum of its proper divisors (15149).

7620667 is a wasteful number, since it uses less digits than its factorization.

7620667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15148.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 7620667 is about 2760.5555600277. Note that the first 4 decimals coincide. The cubic root of 7620667 is about 196.7875693754.

The spelling of 7620667 in words is "seven million, six hundred twenty thousand, six hundred sixty-seven".