667072441 has 4 divisors (see below), whose sum is σ = 762368512. Its totient is φ = 571776372.

The previous prime is 667072429. The next prime is 667072489. The reversal of 667072441 is 144270766.

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 667072441 - 2⁷ = 667072313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667072441.

It is not an unprimeable number, because it can be changed into a prime (667072421) 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, 47648025 + ... + 47648038.

It is an arithmetic number, because the mean of its divisors is an integer number (190592128).

Almost surely, 2^667072441 is an apocalyptic number.

It is an amenable number.

667072441 is a deficient number, since it is larger than the sum of its proper divisors (95296071).

667072441 is an equidigital number, since it uses as much as digits as its factorization.

667072441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95296070.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 667072441 is about 25827.7455655735. The cubic root of 667072441 is about 873.7576670544.

The spelling of 667072441 in words is "six hundred sixty-seven million, seventy-two thousand, four hundred forty-one".