61801147 has 8 divisors (see below), whose sum is σ = 63166400. Its totient is φ = 60450624.

The previous prime is 61801141. The next prime is 61801151. The reversal of 61801147 is 74110816.

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

It is a cyclic number.

It is not a de Polignac number, because 61801147 - 2³ = 61801139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61801141) 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, 5023 + ... + 12199.

It is an arithmetic number, because the mean of its divisors is an integer number (7895800).

Almost surely, 2^61801147 is an apocalyptic number.

61801147 is a deficient number, since it is larger than the sum of its proper divisors (1365253).

61801147 is a wasteful number, since it uses less digits than its factorization.

61801147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 61801147 is about 7861.3705548079. The cubic root of 61801147 is about 395.3655687382.

The spelling of 61801147 in words is "sixty-one million, eight hundred one thousand, one hundred forty-seven".