1066636454 has 24 divisors (see below), whose sum is σ = 1801222752. Its totient is φ = 470883600.

The previous prime is 1066636451. The next prime is 1066636463. The reversal of 1066636454 is 4546366601.

It is a super-2 number, since 2×1066636454² = 2275426650003388232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066636451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25022 + ... + 52529.

It is an arithmetic number, because the mean of its divisors is an integer number (75050948).

Almost surely, 2^1066636454 is an apocalyptic number.

1066636454 is a deficient number, since it is larger than the sum of its proper divisors (734586298).

1066636454 is a wasteful number, since it uses less digits than its factorization.

1066636454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77612 (or 77589 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 1066636454 is about 32659.4006987269. The cubic root of 1066636454 is about 1021.7362629956.

The spelling of 1066636454 in words is "one billion, sixty-six million, six hundred thirty-six thousand, four hundred fifty-four".