7620145 has 16 divisors (see below), whose sum is σ = 10019520. Its totient is φ = 5529024.

The previous prime is 7620143. The next prime is 7620161. The reversal of 7620145 is 5410267.

It is a cyclic number.

It is not a de Polignac number, because 7620145 - 2¹ = 7620143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7620143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2842 + ... + 4828.

It is an arithmetic number, because the mean of its divisors is an integer number (626220).

Almost surely, 2^7620145 is an apocalyptic number.

It is an amenable number.

7620145 is a deficient number, since it is larger than the sum of its proper divisors (2399375).

7620145 is a wasteful number, since it uses less digits than its factorization.

7620145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 7620145 is about 2760.4610122224. The cubic root of 7620145 is about 196.7830760916.

The spelling of 7620145 in words is "seven million, six hundred twenty thousand, one hundred forty-five".