61321895 has 8 divisors (see below), whose sum is σ = 73993920. Its totient is φ = 48785760.

The previous prime is 61321891. The next prime is 61321961. The reversal of 61321895 is 59812316.

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

It is not a de Polignac number, because 61321895 - 2² = 61321891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61321891) 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, 32975 + ... + 34784.

It is an arithmetic number, because the mean of its divisors is an integer number (9249240).

Almost surely, 2^61321895 is an apocalyptic number.

61321895 is a deficient number, since it is larger than the sum of its proper divisors (12672025).

61321895 is a wasteful number, since it uses less digits than its factorization.

61321895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67945.

The product of its digits is 12960, while the sum is 35.

The square root of 61321895 is about 7830.8297772331. The cubic root of 61321895 is about 394.3409294517.

The spelling of 61321895 in words is "sixty-one million, three hundred twenty-one thousand, eight hundred ninety-five".