61771012 has 12 divisors (see below), whose sum is σ = 108215296. Its totient is φ = 30852360.

The previous prime is 61770997. The next prime is 61771027. The reversal of 61771012 is 21017716.

It is an interprime number because it is at equal distance from previous prime (61770997) and next prime (61771027).

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, 3828 + ... + 11755.

Almost surely, 2^61771012 is an apocalyptic number.

It is an amenable number.

61771012 is a deficient number, since it is larger than the sum of its proper divisors (46444284).

61771012 is a wasteful number, since it uses less digits than its factorization.

61771012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16578 (or 16576 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 61771012 is about 7859.4536705804. The cubic root of 61771012 is about 395.3012965845.

Adding to 61771012 its reverse (21017716), we get a palindrome (82788728).

The spelling of 61771012 in words is "sixty-one million, seven hundred seventy-one thousand, twelve".