7620253 has 4 divisors (see below), whose sum is σ = 7629820. Its totient is φ = 7610688.

The previous prime is 7620247. The next prime is 7620259. The reversal of 7620253 is 3520267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3520267 = 31 ⋅113557.

It is an interprime number because it is at equal distance from previous prime (7620247) and next prime (7620259).

It can be written as a sum of positive squares in 2 ways, for example, as 6646084 + 974169 = 2578^2 + 987^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7620253 is a prime.

It is a Duffinian number.

7620253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7620259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3468 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (1907455).

Almost surely, 2^7620253 is an apocalyptic number.

It is an amenable number.

7620253 is a deficient number, since it is larger than the sum of its proper divisors (9567).

7620253 is an equidigital number, since it uses as much as digits as its factorization.

7620253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9566.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 7620253 is about 2760.4805741030. The cubic root of 7620253 is about 196.7840057534.

The spelling of 7620253 in words is "seven million, six hundred twenty thousand, two hundred fifty-three".