7820523 has 16 divisors (see below), whose sum is σ = 11698560. Its totient is φ = 5163048.

The previous prime is 7820507. The next prime is 7820551. The reversal of 7820523 is 3250287.

It is not a de Polignac number, because 7820523 - 2⁴ = 7820507 is a prime.

It is a super-2 number, since 2×7820523² = 122321159987058, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7820573) 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, 1536 + ... + 4242.

It is an arithmetic number, because the mean of its divisors is an integer number (731160).

Almost surely, 2^7820523 is an apocalyptic number.

7820523 is a deficient number, since it is larger than the sum of its proper divisors (3878037).

7820523 is a wasteful number, since it uses less digits than its factorization.

7820523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 7820523 is about 2796.5198014675. The cubic root of 7820523 is about 198.4930320907.

The spelling of 7820523 in words is "seven million, eight hundred twenty thousand, five hundred twenty-three".