61249863 has 8 divisors (see below), whose sum is σ = 85964800. Its totient is φ = 38684088.

The previous prime is 61249819. The next prime is 61249873. The reversal of 61249863 is 36894216.

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

It is not a de Polignac number, because 61249863 - 2¹⁶ = 61184327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61249873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537223 + ... + 537336.

It is an arithmetic number, because the mean of its divisors is an integer number (10745600).

Almost surely, 2^61249863 is an apocalyptic number.

61249863 is a deficient number, since it is larger than the sum of its proper divisors (24714937).

61249863 is a wasteful number, since it uses less digits than its factorization.

61249863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074581.

The product of its digits is 62208, while the sum is 39.

The square root of 61249863 is about 7826.2291686354. The cubic root of 61249863 is about 394.1864642580.

The spelling of 61249863 in words is "sixty-one million, two hundred forty-nine thousand, eight hundred sixty-three".