4070642661 has 16 divisors (see below), whose sum is σ = 6073972800. Its totient is φ = 2694235824.

The previous prime is 4070642659. The next prime is 4070642663. The reversal of 4070642661 is 1662460704.

4070642661 is a `hidden beast` number, since 4 + 0 + 7 + 0 + 642 + 6 + 6 + 1 = 666.

4070642661 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4070642659) and next prime (4070642663).

It is not a de Polignac number, because 4070642661 - 2¹ = 4070642659 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4070642663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538566 + ... + 546071.

It is an arithmetic number, because the mean of its divisors is an integer number (379623300).

Almost surely, 2^4070642661 is an apocalyptic number.

It is an amenable number.

4070642661 is a deficient number, since it is larger than the sum of its proper divisors (2003330139).

4070642661 is a wasteful number, since it uses less digits than its factorization.

4070642661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084785 (or 1084779 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 4070642661 is about 63801.5882325824. The cubic root of 4070642661 is about 1596.6914262041.

The spelling of 4070642661 in words is "four billion, seventy million, six hundred forty-two thousand, six hundred sixty-one".