61600012 has 12 divisors (see below), whose sum is σ = 109627560. Its totient is φ = 30277856.

The previous prime is 61600009. The next prime is 61600039. The reversal of 61600012 is 21000616.

It is a super-2 number, since 2×61600012² = 7589122956800288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130273 + ... + 130744.

It is an arithmetic number, because the mean of its divisors is an integer number (9135630).

Almost surely, 2^61600012 is an apocalyptic number.

It is an amenable number.

61600012 is a deficient number, since it is larger than the sum of its proper divisors (48027548).

61600012 is a wasteful number, since it uses less digits than its factorization.

61600012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261080 (or 261078 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 61600012 is about 7848.5675126102. The cubic root of 61600012 is about 394.9361900877.

Adding to 61600012 its reverse (21000616), we get a palindrome (82600628).

The spelling of 61600012 in words is "sixty-one million, six hundred thousand, twelve".