61123964 has 24 divisors (see below), whose sum is σ = 117790848. Its totient is φ = 27521840.

The previous prime is 61123961. The next prime is 61123973. The reversal of 61123964 is 46932116.

It is a super-2 number, since 2×61123964² = 7472277950146592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61123964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61123961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (4907952).

Almost surely, 2^61123964 is an apocalyptic number.

It is an amenable number.

61123964 is a deficient number, since it is larger than the sum of its proper divisors (56666884).

61123964 is a wasteful number, since it uses less digits than its factorization.

61123964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13105 (or 13103 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 61123964 is about 7818.1816300211. The cubic root of 61123964 is about 393.9161957691.

The spelling of 61123964 in words is "sixty-one million, one hundred twenty-three thousand, nine hundred sixty-four".