61947256 has 16 divisors (see below), whose sum is σ = 132744240. Its totient is φ = 26548800.

The previous prime is 61947253. The next prime is 61947311. The reversal of 61947256 is 65274916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61947253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553045 + ... + 553156.

It is an arithmetic number, because the mean of its divisors is an integer number (8296515).

Almost surely, 2^61947256 is an apocalyptic number.

It is an amenable number.

61947256 is an abundant number, since it is smaller than the sum of its proper divisors (70796984).

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

61947256 is a wasteful number, since it uses less digits than its factorization.

61947256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106214 (or 1106210 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 61947256 is about 7870.6579140501. The cubic root of 61947256 is about 395.6768952370.

The spelling of 61947256 in words is "sixty-one million, nine hundred forty-seven thousand, two hundred fifty-six".