675404381 has 4 divisors (see below), whose sum is σ = 710952000. Its totient is φ = 639856764.

The previous prime is 675404377. The next prime is 675404467. The reversal of 675404381 is 183404576.

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 675404381 - 2² = 675404377 is a prime.

It is a super-2 number, since 2×675404381² = 912342155747986322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675404341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17773781 + ... + 17773818.

It is an arithmetic number, because the mean of its divisors is an integer number (177738000).

Almost surely, 2^675404381 is an apocalyptic number.

It is an amenable number.

675404381 is a deficient number, since it is larger than the sum of its proper divisors (35547619).

675404381 is a wasteful number, since it uses less digits than its factorization.

675404381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35547618.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 675404381 is about 25988.5432642924. The cubic root of 675404381 is about 877.3804594155.

The spelling of 675404381 in words is "six hundred seventy-five million, four hundred four thousand, three hundred eighty-one".