61286406 has 8 divisors (see below), whose sum is σ = 122572824. Its totient is φ = 20428800.

The previous prime is 61286399. The next prime is 61286429. The reversal of 61286406 is 60468216.

It is a happy number.

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

61286406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5107195 + ... + 5107206.

It is an arithmetic number, because the mean of its divisors is an integer number (15321603).

Almost surely, 2^61286406 is an apocalyptic number.

61286406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61286406 is a wasteful number, since it uses less digits than its factorization.

61286406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10214406.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 61286406 is about 7828.5634697561. The cubic root of 61286406 is about 394.2648420778.

The spelling of 61286406 in words is "sixty-one million, two hundred eighty-six thousand, four hundred six".