1071640611 has 30 divisors (see below), whose sum is σ = 1700589660. Its totient is φ = 672387264.

The previous prime is 1071640553. The next prime is 1071640613. The reversal of 1071640611 is 1160461701.

1071640611 is a `hidden beast` number, since 1 + 0 + 7 + 1 + 6 + 40 + 611 = 666.

It is not a de Polignac number, because 1071640611 - 2¹⁵ = 1071607843 is a prime.

It is a super-2 number, since 2×1071640611² = 2296827198288906642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1071640613) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 520 + ... + 46298.

It is an arithmetic number, because the mean of its divisors is an integer number (56686322).

Almost surely, 2^1071640611 is an apocalyptic number.

1071640611 is a deficient number, since it is larger than the sum of its proper divisors (628949049).

1071640611 is an equidigital number, since it uses as much as digits as its factorization.

1071640611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45825 (or 45799 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1071640611 is about 32735.9223331190. The cubic root of 1071640611 is about 1023.3316061916.

The spelling of 1071640611 in words is "one billion, seventy-one million, six hundred forty thousand, six hundred eleven".