1066520631 has 8 divisors (see below), whose sum is σ = 1551302784. Its totient is φ = 646376120.

The previous prime is 1066520629. The next prime is 1066520641. The reversal of 1066520631 is 1360256601.

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

It is a cyclic number.

It is not a de Polignac number, because 1066520631 - 2¹ = 1066520629 is a prime.

It is a super-2 number, since 2×1066520631² = 2274932512697276322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066520641) 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 7 ways as a sum of consecutive naturals, for example, 16159371 + ... + 16159436.

It is an arithmetic number, because the mean of its divisors is an integer number (193912848).

Almost surely, 2^1066520631 is an apocalyptic number.

1066520631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1066520631 is a deficient number, since it is larger than the sum of its proper divisors (484782153).

1066520631 is a wasteful number, since it uses less digits than its factorization.

1066520631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32318821.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1066520631 is about 32657.6274551597. The cubic root of 1066520631 is about 1021.6992791846.

The spelling of 1066520631 in words is "one billion, sixty-six million, five hundred twenty thousand, six hundred thirty-one".