61951284 has 48 divisors (see below), whose sum is σ = 161192640. Its totient is φ = 20576160.

The previous prime is 61951273. The next prime is 61951289. The reversal of 61951284 is 48215916.

61951284 is a `hidden beast` number, since 61 + 9 + 512 + 84 = 666.

61951284 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 (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61951289) 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 15 ways as a sum of consecutive naturals, for example, 34882 + ... + 36614.

It is an arithmetic number, because the mean of its divisors is an integer number (3358180).

Almost surely, 2^61951284 is an apocalyptic number.

It is an amenable number.

61951284 is an abundant number, since it is smaller than the sum of its proper divisors (99241356).

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

61951284 is a wasteful number, since it uses less digits than its factorization.

61951284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077 (or 2069 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 61951284 is about 7870.9137970124. The cubic root of 61951284 is about 395.6854710917.

The spelling of 61951284 in words is "sixty-one million, nine hundred fifty-one thousand, two hundred eighty-four".