7620985 has 8 divisors (see below), whose sum is σ = 9160200. Its totient is φ = 6086784.

The previous prime is 7620979. The next prime is 7621037. The reversal of 7620985 is 5890267.

It can be written as a sum of positive squares in 4 ways, for example, as 4477456 + 3143529 = 2116^2 + 1773^2 .

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 7620985 - 2¹⁷ = 7489913 is a prime.

7620985 is a lucky 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, 4519 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (1145025).

Almost surely, 2^7620985 is an apocalyptic number.

It is an amenable number.

7620985 is a deficient number, since it is larger than the sum of its proper divisors (1539215).

7620985 is a wasteful number, since it uses less digits than its factorization.

7620985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 7620985 is about 2760.6131565288. The cubic root of 7620985 is about 196.7903065626.

The spelling of 7620985 in words is "seven million, six hundred twenty thousand, nine hundred eighty-five".