61499329 has 4 divisors (see below), whose sum is σ = 61738884. Its totient is φ = 61259776.

The previous prime is 61499323. The next prime is 61499341. The reversal of 61499329 is 92399416.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58874929 + 2624400 = 7673^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 61499329 - 2⁵ = 61499297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61499323) 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, 119392 + ... + 119905.

It is an arithmetic number, because the mean of its divisors is an integer number (15434721).

Almost surely, 2^61499329 is an apocalyptic number.

It is an amenable number.

61499329 is a deficient number, since it is larger than the sum of its proper divisors (239555).

61499329 is a wasteful number, since it uses less digits than its factorization.

61499329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239554.

The product of its digits is 104976, while the sum is 43.

The square root of 61499329 is about 7842.1507891649. The cubic root of 61499329 is about 394.7209030947.

The spelling of 61499329 in words is "sixty-one million, four hundred ninety-nine thousand, three hundred twenty-nine".