61298591 has 8 divisors (see below), whose sum is σ = 61814544. Its totient is φ = 60785280.

The previous prime is 61298569. The next prime is 61298593. The reversal of 61298591 is 19589216.

It is a happy number.

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 61298591 - 2⁶ = 61298527 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 (61298593) 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, 83261 + ... + 83993.

It is an arithmetic number, because the mean of its divisors is an integer number (7726818).

Almost surely, 2^61298591 is an apocalyptic number.

61298591 is a deficient number, since it is larger than the sum of its proper divisors (515953).

61298591 is a wasteful number, since it uses less digits than its factorization.

61298591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321.

The product of its digits is 38880, while the sum is 41.

The square root of 61298591 is about 7829.3416709197. The cubic root of 61298591 is about 394.2909696705.

The spelling of 61298591 in words is "sixty-one million, two hundred ninety-eight thousand, five hundred ninety-one".