61965369 has 6 divisors (see below), whose sum is σ = 89505546. Its totient is φ = 41310240.

The previous prime is 61965367. The next prime is 61965389. The reversal of 61965369 is 96356916.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 6656400 = 7437^2 + 2580^2 .

It is not a de Polignac number, because 61965369 - 2¹ = 61965367 is a prime.

It is a super-2 number, since 2×61965369² = 7679413910612322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61965367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3442512 + ... + 3442529.

It is an arithmetic number, because the mean of its divisors is an integer number (14917591).

Almost surely, 2^61965369 is an apocalyptic number.

It is an amenable number.

61965369 is a deficient number, since it is larger than the sum of its proper divisors (27540177).

61965369 is a wasteful number, since it uses less digits than its factorization.

61965369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885047 (or 6885044 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 61965369 is about 7871.8084961462. The cubic root of 61965369 is about 395.7154559829.

The spelling of 61965369 in words is "sixty-one million, nine hundred sixty-five thousand, three hundred sixty-nine".