675421757 has 4 divisors (see below), whose sum is σ = 675581760. Its totient is φ = 675261756.

The previous prime is 675421739. The next prime is 675421759. The reversal of 675421757 is 757124576.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 675421757 - 2¹² = 675417661 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 (675421759) 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, 73493 + ... + 82170.

It is an arithmetic number, because the mean of its divisors is an integer number (168895440).

Almost surely, 2^675421757 is an apocalyptic number.

It is an amenable number.

675421757 is a deficient number, since it is larger than the sum of its proper divisors (160003).

675421757 is a wasteful number, since it uses less digits than its factorization.

675421757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160002.

The product of its digits is 411600, while the sum is 44.

The square root of 675421757 is about 25988.8775632962. The cubic root of 675421757 is about 877.3879834177.

The spelling of 675421757 in words is "six hundred seventy-five million, four hundred twenty-one thousand, seven hundred fifty-seven".