61995601 has 4 divisors (see below), whose sum is σ = 62017600. Its totient is φ = 61973604.

The previous prime is 61995599. The next prime is 61995611. The reversal of 61995601 is 10659916.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61995601 - 2¹ = 61995599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61995611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6021 + ... + 12658.

It is an arithmetic number, because the mean of its divisors is an integer number (15504400).

Almost surely, 2^61995601 is an apocalyptic number.

It is an amenable number.

61995601 is a deficient number, since it is larger than the sum of its proper divisors (21999).

61995601 is a wasteful number, since it uses less digits than its factorization.

61995601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21998.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 61995601 is about 7873.7285322774. The cubic root of 61995601 is about 395.7798001202.

The spelling of 61995601 in words is "sixty-one million, nine hundred ninety-five thousand, six hundred one".