61965119 has 4 divisors (see below), whose sum is σ = 65610144. Its totient is φ = 58320096.

The previous prime is 61965097. The next prime is 61965139. The reversal of 61965119 is 91156916.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61965119 - 2¹⁶ = 61899583 is a prime.

It is a super-2 number, since 2×61965119² = 7679351945368322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61965139) 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, 1822487 + ... + 1822520.

It is an arithmetic number, because the mean of its divisors is an integer number (16402536).

Almost surely, 2^61965119 is an apocalyptic number.

61965119 is a deficient number, since it is larger than the sum of its proper divisors (3645025).

61965119 is a wasteful number, since it uses less digits than its factorization.

61965119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645024.

The product of its digits is 14580, while the sum is 38.

The square root of 61965119 is about 7871.7926166789. The cubic root of 61965119 is about 395.7149238094.

The spelling of 61965119 in words is "sixty-one million, nine hundred sixty-five thousand, one hundred nineteen".