61673329 has 4 divisors (see below), whose sum is σ = 61689460. Its totient is φ = 61657200.

The previous prime is 61673323. The next prime is 61673347. The reversal of 61673329 is 92337616.

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 can be written as a sum of positive squares in 2 ways, for example, as 47983329 + 13690000 = 6927^2 + 3700^2 .

It is a cyclic number.

It is not a de Polignac number, because 61673329 - 2³ = 61673321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61673321) 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, 1279 + ... + 11179.

It is an arithmetic number, because the mean of its divisors is an integer number (15422365).

Almost surely, 2^61673329 is an apocalyptic number.

It is an amenable number.

61673329 is a deficient number, since it is larger than the sum of its proper divisors (16131).

61673329 is an equidigital number, since it uses as much as digits as its factorization.

61673329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16130.

The product of its digits is 40824, while the sum is 37.

The square root of 61673329 is about 7853.2368485867. The cubic root of 61673329 is about 395.0928137396.

The spelling of 61673329 in words is "sixty-one million, six hundred seventy-three thousand, three hundred twenty-nine".