61270647 has 8 divisors (see below), whose sum is σ = 82291056. Its totient is φ = 40548672.

The previous prime is 61270637. The next prime is 61270667. The reversal of 61270647 is 74607216.

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

It is not a de Polignac number, because 61270647 - 2⁷ = 61270519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61270607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74128 + ... + 74949.

It is an arithmetic number, because the mean of its divisors is an integer number (10286382).

Almost surely, 2^61270647 is an apocalyptic number.

61270647 is a deficient number, since it is larger than the sum of its proper divisors (21020409).

61270647 is a wasteful number, since it uses less digits than its factorization.

61270647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149217.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 61270647 is about 7827.5568985476. The cubic root of 61270647 is about 394.2310458269.

The spelling of 61270647 in words is "sixty-one million, two hundred seventy thousand, six hundred forty-seven".