61858839 has 8 divisors (see below), whose sum is σ = 94261120. Its totient is φ = 35347896.

The previous prime is 61858837. The next prime is 61858843. The reversal of 61858839 is 93885816.

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

It is not a de Polignac number, because 61858839 - 2¹ = 61858837 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 (61858831) 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, 1472809 + ... + 1472850.

It is an arithmetic number, because the mean of its divisors is an integer number (11782640).

Almost surely, 2^61858839 is an apocalyptic number.

61858839 is a deficient number, since it is larger than the sum of its proper divisors (32402281).

61858839 is a wasteful number, since it uses less digits than its factorization.

61858839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945669.

The product of its digits is 414720, while the sum is 48.

The square root of 61858839 is about 7865.0390335967. The cubic root of 61858839 is about 395.4885564041.

The spelling of 61858839 in words is "sixty-one million, eight hundred fifty-eight thousand, eight hundred thirty-nine".