2067461661 has 4 divisors (see below), whose sum is σ = 2756615552. Its totient is φ = 1378307772.

The previous prime is 2067461659. The next prime is 2067461663. The reversal of 2067461661 is 1661647602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2067461659) and next prime (2067461663).

It is not a de Polignac number, because 2067461661 - 2¹ = 2067461659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2067461663) 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, 344576941 + ... + 344576946.

It is an arithmetic number, because the mean of its divisors is an integer number (689153888).

Almost surely, 2^2067461661 is an apocalyptic number.

It is an amenable number.

2067461661 is a deficient number, since it is larger than the sum of its proper divisors (689153891).

2067461661 is an equidigital number, since it uses as much as digits as its factorization.

2067461661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689153890.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2067461661 is about 45469.3485878124. The cubic root of 2067461661 is about 1273.9307526107.

The spelling of 2067461661 in words is "two billion, sixty-seven million, four hundred sixty-one thousand, six hundred sixty-one".