61873955 has 24 divisors (see below), whose sum is σ = 87901296. Its totient is φ = 41532480.

The previous prime is 61873943. The next prime is 61873991. The reversal of 61873955 is 55937816.

61873955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 7866²-1.

It is not a de Polignac number, because 61873955 - 2⁶ = 61873891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3932 + ... + 11798.

It is an arithmetic number, because the mean of its divisors is an integer number (3662554).

Almost surely, 2^61873955 is an apocalyptic number.

61873955 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61873955 is a deficient number, since it is larger than the sum of its proper divisors (26027341).

61873955 is a wasteful number, since it uses less digits than its factorization.

61873955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7907 (or 7896 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 61873955 is about 7865.9999364353. Note that the first 4 decimals coincide. The cubic root of 61873955 is about 395.5207680128.

The spelling of 61873955 in words is "sixty-one million, eight hundred seventy-three thousand, nine hundred fifty-five".