2061630612 has 18 divisors (see below), whose sum is σ = 5211344138. Its totient is φ = 687210192.

The previous prime is 2061630611. The next prime is 2061630629. The reversal of 2061630612 is 2160361602.

2061630612 is a `hidden beast` number, since 2 + 0 + 6 + 16 + 30 + 612 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1223180676 + 838449936 = 34974^2 + 28956^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061630611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28633723 + ... + 28633794.

Almost surely, 2^2061630612 is an apocalyptic number.

It is an amenable number.

2061630612 is an abundant number, since it is smaller than the sum of its proper divisors (3149713526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061630612 is a wasteful number, since it uses less digits than its factorization.

2061630612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57267527 (or 57267522 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2061630612 is about 45405.1826557277. The cubic root of 2061630612 is about 1272.7319642022.

The spelling of 2061630612 in words is "two billion, sixty-one million, six hundred thirty thousand, six hundred twelve".