7677445 has 4 divisors (see below), whose sum is σ = 9212940. Its totient is φ = 6141952.

The previous prime is 7677437. The next prime is 7677487. The reversal of 7677445 is 5447767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5447767 = 13 ⋅419059.

It can be written as a sum of positive squares in 2 ways, for example, as 4941729 + 2735716 = 2223^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 7677445 - 2³ = 7677437 is a prime.

It is a super-4 number, since 4×7677445⁴ (a number of 29 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

7677445 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7677398 and 7677407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767740 + ... + 767749.

It is an arithmetic number, because the mean of its divisors is an integer number (2303235).

Almost surely, 2^7677445 is an apocalyptic number.

It is an amenable number.

7677445 is a deficient number, since it is larger than the sum of its proper divisors (1535495).

7677445 is a wasteful number, since it uses less digits than its factorization.

7677445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535494.

The product of its digits is 164640, while the sum is 40.

The square root of 7677445 is about 2770.8202756585. The cubic root of 7677445 is about 197.2750844508.

The spelling of 7677445 in words is "seven million, six hundred seventy-seven thousand, four hundred forty-five".