1066622451 has 4 divisors (see below), whose sum is σ = 1422163272. Its totient is φ = 711081632.

The previous prime is 1066622441. The next prime is 1066622467. The reversal of 1066622451 is 1542266601.

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

It is a cyclic number.

It is not a de Polignac number, because 1066622451 - 2²³ = 1058233843 is a prime.

It is a super-2 number, since 2×1066622451² = 2275366905954494802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066622441) 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, 177770406 + ... + 177770411.

It is an arithmetic number, because the mean of its divisors is an integer number (355540818).

Almost surely, 2^1066622451 is an apocalyptic number.

1066622451 is a deficient number, since it is larger than the sum of its proper divisors (355540821).

1066622451 is an equidigital number, since it uses as much as digits as its factorization.

1066622451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355540820.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1066622451 is about 32659.1863187067. The cubic root of 1066622451 is about 1021.7317917953.

The spelling of 1066622451 in words is "one billion, sixty-six million, six hundred twenty-two thousand, four hundred fifty-one".