61212164 has 12 divisors (see below), whose sum is σ = 115361484. Its totient is φ = 28251744.

The previous prime is 61212163. The next prime is 61212169. The reversal of 61212164 is 46121216.

It can be written as a sum of positive squares in 2 ways, for example, as 3452164 + 57760000 = 1858^2 + 7600^2 .

It is not an unprimeable number, because it can be changed into a prime (61212163) 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, 588527 + ... + 588630.

It is an arithmetic number, because the mean of its divisors is an integer number (9613457).

Almost surely, 2^61212164 is an apocalyptic number.

It is an amenable number.

61212164 is a deficient number, since it is larger than the sum of its proper divisors (54149320).

61212164 is a wasteful number, since it uses less digits than its factorization.

61212164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177174 (or 1177172 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 61212164 is about 7823.8202944597. The cubic root of 61212164 is about 394.1055743606.

The spelling of 61212164 in words is "sixty-one million, two hundred twelve thousand, one hundred sixty-four".