61806241 has 8 divisors (see below), whose sum is σ = 70709184. Its totient is φ = 52921680.

The previous prime is 61806233. The next prime is 61806257. The reversal of 61806241 is 14260816.

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

It is not a de Polignac number, because 61806241 - 2³ = 61806233 is a prime.

It is a super-2 number, since 2×61806241² = 7640022853100162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61806341) 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, 3591 + ... + 11683.

It is an arithmetic number, because the mean of its divisors is an integer number (8838648).

Almost surely, 2^61806241 is an apocalyptic number.

It is an amenable number.

61806241 is a deficient number, since it is larger than the sum of its proper divisors (8902943).

61806241 is a wasteful number, since it uses less digits than its factorization.

61806241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 61806241 is about 7861.6945374391. The cubic root of 61806241 is about 395.3764311951.

It can be divided in two parts, 6180 and 6241, that added together give a palindrome (12421).

The spelling of 61806241 in words is "sixty-one million, eight hundred six thousand, two hundred forty-one".