61709853 has 8 divisors (see below), whose sum is σ = 86610400. Its totient is φ = 38974608.

The previous prime is 61709827. The next prime is 61709873. The reversal of 61709853 is 35890716.

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

It is not a de Polignac number, because 61709853 - 2⁹ = 61709341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61709803) 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, 541258 + ... + 541371.

It is an arithmetic number, because the mean of its divisors is an integer number (10826300).

Almost surely, 2^61709853 is an apocalyptic number.

It is an amenable number.

61709853 is a deficient number, since it is larger than the sum of its proper divisors (24900547).

61709853 is a wasteful number, since it uses less digits than its factorization.

61709853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082651.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 61709853 is about 7855.5619149746. The cubic root of 61709853 is about 395.1707919216.

The spelling of 61709853 in words is "sixty-one million, seven hundred nine thousand, eight hundred fifty-three".