61772012 has 6 divisors (see below), whose sum is σ = 108101028. Its totient is φ = 30886004.

The previous prime is 61771991. The next prime is 61772023. The reversal of 61772012 is 21027716.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7721498 + ... + 7721505.

It is an arithmetic number, because the mean of its divisors is an integer number (18016838).

Almost surely, 2^61772012 is an apocalyptic number.

It is an amenable number.

61772012 is a deficient number, since it is larger than the sum of its proper divisors (46329016).

61772012 is a wasteful number, since it uses less digits than its factorization.

61772012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15443007 (or 15443005 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 61772012 is about 7859.5172879764. The cubic root of 61772012 is about 395.3034297273.

Adding to 61772012 its reverse (21027716), we get a palindrome (82799728).

The spelling of 61772012 in words is "sixty-one million, seven hundred seventy-two thousand, twelve".