672522457 has 4 divisors (see below), whose sum is σ = 673572276. Its totient is φ = 671472640.

The previous prime is 672522427. The next prime is 672522481. The reversal of 672522457 is 754225276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 627953481 + 44568976 = 25059^2 + 6676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672522457 is a prime.

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.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672522427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523948 + ... + 525229.

It is an arithmetic number, because the mean of its divisors is an integer number (168393069).

Almost surely, 2^672522457 is an apocalyptic number.

It is an amenable number.

672522457 is a deficient number, since it is larger than the sum of its proper divisors (1049819).

672522457 is a wasteful number, since it uses less digits than its factorization.

672522457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049818.

The product of its digits is 235200, while the sum is 40.

The square root of 672522457 is about 25933.0379439047. The cubic root of 672522457 is about 876.1307642585.

The spelling of 672522457 in words is "six hundred seventy-two million, five hundred twenty-two thousand, four hundred fifty-seven".