7780023 has 16 divisors (see below), whose sum is σ = 11593440. Its totient is φ = 5156352.

The previous prime is 7780013. The next prime is 7780043. The reversal of 7780023 is 3200877.

7780023 is nontrivially palindromic in base 2.

7780023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7780023 - 2⁴ = 7780007 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7780013) 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, 4465 + ... + 5957.

It is an arithmetic number, because the mean of its divisors is an integer number (724590).

Almost surely, 2^7780023 is an apocalyptic number.

7780023 is a deficient number, since it is larger than the sum of its proper divisors (3813417).

7780023 is a wasteful number, since it uses less digits than its factorization.

7780023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 7780023 is about 2789.2692591430. The cubic root of 7780023 is about 198.1497948184.

The spelling of 7780023 in words is "seven million, seven hundred eighty thousand, twenty-three".