1230644061 has 6 divisors (see below), whose sum is σ = 1777596990. Its totient is φ = 820429368.

The previous prime is 1230644057. The next prime is 1230644081. The reversal of 1230644061 is 1604460321.

1230644061 is a `hidden beast` number, since 12 + 3 + 0 + 644 + 0 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 749719161 + 480924900 = 27381^2 + 21930^2 .

It is not a de Polignac number, because 1230644061 - 2² = 1230644057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230644081) 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, 68369106 + ... + 68369123.

It is an arithmetic number, because the mean of its divisors is an integer number (296266165).

Almost surely, 2^1230644061 is an apocalyptic number.

It is an amenable number.

1230644061 is a deficient number, since it is larger than the sum of its proper divisors (546952929).

1230644061 is a wasteful number, since it uses less digits than its factorization.

1230644061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136738235 (or 136738232 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1230644061 is about 35080.5367832364. The cubic root of 1230644061 is about 1071.6282488571.

The spelling of 1230644061 in words is "one billion, two hundred thirty million, six hundred forty-four thousand, sixty-one".