61871030 has 64 divisors (see below), whose sum is σ = 129850560. Its totient is φ = 21026304.

The previous prime is 61871027. The next prime is 61871039. The reversal of 61871030 is 3017816.

61871030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61871039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91052 + ... + 91728.

It is an arithmetic number, because the mean of its divisors is an integer number (2028915).

Almost surely, 2^61871030 is an apocalyptic number.

61871030 is an abundant number, since it is smaller than the sum of its proper divisors (67979530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61871030 is a wasteful number, since it uses less digits than its factorization.

61871030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 61871030 is about 7865.8140074629. The cubic root of 61871030 is about 395.5145353608.

Adding to 61871030 its reverse (3017816), we get a palindrome (64888846).

The spelling of 61871030 in words is "sixty-one million, eight hundred seventy-one thousand, thirty".