61199329 has 3 divisors (see below), whose sum is σ = 61207153. Its totient is φ = 61191506.

The previous prime is 61199273. The next prime is 61199377. The reversal of 61199329 is 92399116.

The square root of 61199329 is 7823.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 61199329 - 2¹¹ = 61197281 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61199291 and 61199300.

It is not an unprimeable number, because it can be changed into a prime (61199729) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3912 + ... + 11734.

Almost surely, 2^61199329 is an apocalyptic number.

61199329 is the 7823-rd square number.

61199329 is the 3912-nd centered octagonal number.

It is an amenable number.

61199329 is a deficient number, since it is larger than the sum of its proper divisors (7824).

61199329 is an frugal number, since it uses more digits than its factorization.

61199329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15646 (or 7823 counting only the distinct ones).

The product of its digits is 26244, while the sum is 40.

The cubic root of 61199329 is about 394.0780270110.

Multiplying 61199329 by its product of digits (26244), we get a square (1606115190276 = 1267326²).

The spelling of 61199329 in words is "sixty-one million, one hundred ninety-nine thousand, three hundred twenty-nine".