1066005651 has 8 divisors (see below), whose sum is σ = 1421562304. Its totient is φ = 710559720.

The previous prime is 1066005623. The next prime is 1066005673. The reversal of 1066005651 is 1565006601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1066005651 - 2¹⁹ = 1065481363 is a prime.

It is a super-2 number, since 2×1066005651² = 2272736095927867602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066005151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1741 + ... + 46206.

It is an arithmetic number, because the mean of its divisors is an integer number (177695288).

Almost surely, 2^1066005651 is an apocalyptic number.

1066005651 is a deficient number, since it is larger than the sum of its proper divisors (355556653).

1066005651 is an equidigital number, since it uses as much as digits as its factorization.

1066005651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55361.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1066005651 is about 32649.7419744781. The cubic root of 1066005651 is about 1021.5348068533.

The spelling of 1066005651 in words is "one billion, sixty-six million, five thousand, six hundred fifty-one".