61256642 has 8 divisors (see below), whose sum is σ = 95053500. Its totient is φ = 29572144.

The previous prime is 61256641. The next prime is 61256647. The reversal of 61256642 is 24665216.

It can be written as a sum of positive squares in 2 ways, for example, as 53743561 + 7513081 = 7331^2 + 2741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61256599 and 61256608.

It is not an unprimeable number, because it can be changed into a prime (61256641) 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, 528017 + ... + 528132.

Almost surely, 2^61256642 is an apocalyptic number.

61256642 is a deficient number, since it is larger than the sum of its proper divisors (33796858).

61256642 is a wasteful number, since it uses less digits than its factorization.

61256642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056180.

The product of its digits is 17280, while the sum is 32.

The square root of 61256642 is about 7826.6622515604. The cubic root of 61256642 is about 394.2010062849.

The spelling of 61256642 in words is "sixty-one million, two hundred fifty-six thousand, six hundred forty-two".