61847457 has 12 divisors (see below), whose sum is σ = 95926896. Its totient is φ = 35341320.

The previous prime is 61847453. The next prime is 61847477. The reversal of 61847457 is 75474816.

It is not a de Polignac number, because 61847457 - 2² = 61847453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61847453) 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 11 ways as a sum of consecutive naturals, for example, 210219 + ... + 210512.

It is an arithmetic number, because the mean of its divisors is an integer number (7993908).

Almost surely, 2^61847457 is an apocalyptic number.

It is an amenable number.

61847457 is a deficient number, since it is larger than the sum of its proper divisors (34079439).

61847457 is a wasteful number, since it uses less digits than its factorization.

61847457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420748 (or 420741 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 61847457 is about 7864.3154183947. The cubic root of 61847457 is about 395.4642983410.

The spelling of 61847457 in words is "sixty-one million, eight hundred forty-seven thousand, four hundred fifty-seven".