61602061 has 8 divisors (see below), whose sum is σ = 63843480. Its totient is φ = 59368512.

The previous prime is 61602041. The next prime is 61602071. The reversal of 61602061 is 16020616.

It can be written as a sum of positive squares in 4 ways, for example, as 20884900 + 40717161 = 4570^2 + 6381^2 .

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 61602061 - 2⁵ = 61602029 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 (61602001) 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, 17311 + ... + 20563.

It is an arithmetic number, because the mean of its divisors is an integer number (7980435).

Almost surely, 2^61602061 is an apocalyptic number.

It is an amenable number.

61602061 is a deficient number, since it is larger than the sum of its proper divisors (2241419).

61602061 is a wasteful number, since it uses less digits than its factorization.

61602061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 61602061 is about 7848.6980448989. The cubic root of 61602061 is about 394.9405689574.

Adding to 61602061 its reverse (16020616), we get a palindrome (77622677).

The spelling of 61602061 in words is "sixty-one million, six hundred two thousand, sixty-one".