7126645 has 8 divisors (see below), whose sum is σ = 8713656. Its totient is φ = 5593536.

The previous prime is 7126633. The next prime is 7126649. The reversal of 7126645 is 5466217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3090564 + 4036081 = 1758^2 + 2009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7126645 - 2⁷ = 7126517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7126649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13182 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (1089207).

Almost surely, 2^7126645 is an apocalyptic number.

It is an amenable number.

7126645 is a deficient number, since it is larger than the sum of its proper divisors (1587011).

7126645 is a wasteful number, since it uses less digits than its factorization.

7126645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26951.

The product of its digits is 10080, while the sum is 31.

The square root of 7126645 is about 2669.5776819565. The cubic root of 7126645 is about 192.4398642766.

The spelling of 7126645 in words is "seven million, one hundred twenty-six thousand, six hundred forty-five".