1086666457 has 4 divisors (see below), whose sum is σ = 1092947940. Its totient is φ = 1080384976.

The previous prime is 1086666407. The next prime is 1086666463. The reversal of 1086666457 is 7546666801.

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 757570576 + 329095881 = 27524^2 + 18141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1086666457 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 1086666457.

It is not an unprimeable number, because it can be changed into a prime (1086666407) 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, 3140482 + ... + 3140827.

It is an arithmetic number, because the mean of its divisors is an integer number (273236985).

Almost surely, 2^1086666457 is an apocalyptic number.

It is an amenable number.

1086666457 is a deficient number, since it is larger than the sum of its proper divisors (6281483).

1086666457 is an equidigital number, since it uses as much as digits as its factorization.

1086666457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281482.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 1086666457 is about 32964.6243266930. The cubic root of 1086666457 is about 1028.0922543464.

The spelling of 1086666457 in words is "one billion, eighty-six million, six hundred sixty-six thousand, four hundred fifty-seven".