61201613 has 8 divisors (see below), whose sum is σ = 66851616. Its totient is φ = 55566000.

The previous prime is 61201607. The next prime is 61201631. The reversal of 61201613 is 31610216.

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 61201613 - 2⁶ = 61201549 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 (61201013) 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, 6563 + ... + 12863.

It is an arithmetic number, because the mean of its divisors is an integer number (8356452).

Almost surely, 2^61201613 is an apocalyptic number.

It is an amenable number.

61201613 is a deficient number, since it is larger than the sum of its proper divisors (5650003).

61201613 is a wasteful number, since it uses less digits than its factorization.

61201613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7195.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 61201613 is about 7823.1459784412. The cubic root of 61201613 is about 394.0829293688.

Adding to 61201613 its reverse (31610216), we get a palindrome (92811829).

The spelling of 61201613 in words is "sixty-one million, two hundred one thousand, six hundred thirteen".