61992265 has 8 divisors (see below), whose sum is σ = 74440008. Its totient is φ = 49560960.

The previous prime is 61992263. The next prime is 61992277. The reversal of 61992265 is 56229916.

It can be written as a sum of positive squares in 4 ways, for example, as 1354896 + 60637369 = 1164^2 + 7787^2 .

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

It is not a de Polignac number, because 61992265 - 2¹ = 61992263 is a prime.

It is a super-3 number, since 3×61992265³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61992263) 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, 6855 + ... + 13075.

It is an arithmetic number, because the mean of its divisors is an integer number (9305001).

It is a vampire number, since it can be written as 6221 ⋅ 9965 (with its own digits).

Almost surely, 2^61992265 is an apocalyptic number.

It is an amenable number.

61992265 is a deficient number, since it is larger than the sum of its proper divisors (12447743).

61992265 is a wasteful number, since it uses less digits than its factorization.

61992265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8219.

The product of its digits is 58320, while the sum is 40.

The square root of 61992265 is about 7873.5166857002. The cubic root of 61992265 is about 395.7727009870.

It can be divided in two parts, 6199 and 2265, that added together give a square (8464 = 92²).

The spelling of 61992265 in words is "sixty-one million, nine hundred ninety-two thousand, two hundred sixty-five".