61601012 has 12 divisors (see below), whose sum is σ = 117602016. Its totient is φ = 28000440.

The previous prime is 61601009. The next prime is 61601027. The reversal of 61601012 is 21010616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699968 + ... + 700055.

It is an arithmetic number, because the mean of its divisors is an integer number (9800168).

Almost surely, 2^61601012 is an apocalyptic number.

It is an amenable number.

61601012 is a deficient number, since it is larger than the sum of its proper divisors (56001004).

61601012 is a wasteful number, since it uses less digits than its factorization.

61601012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400038 (or 1400036 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 61601012 is about 7848.6312182444. The cubic root of 61601012 is about 394.9383271763.

Adding to 61601012 its reverse (21010616), we get a palindrome (82611628).

The spelling of 61601012 in words is "sixty-one million, six hundred one thousand, twelve".