61655329 has 4 divisors (see below), whose sum is σ = 61700800. Its totient is φ = 61609860.

The previous prime is 61655327. The next prime is 61655339. The reversal of 61655329 is 92355616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61655329 - 2¹ = 61655327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61655327) 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, 20637 + ... + 23434.

It is an arithmetic number, because the mean of its divisors is an integer number (15425200).

Almost surely, 2^61655329 is an apocalyptic number.

It is an amenable number.

61655329 is a deficient number, since it is larger than the sum of its proper divisors (45471).

61655329 is a wasteful number, since it uses less digits than its factorization.

61655329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45470.

The product of its digits is 48600, while the sum is 37.

The square root of 61655329 is about 7852.0907406881. The cubic root of 61655329 is about 395.0543726892.

It can be divided in two parts, 616 and 55329, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 61655329 in words is "sixty-one million, six hundred fifty-five thousand, three hundred twenty-nine".