61330655 has 8 divisors (see below), whose sum is σ = 73872000. Its totient is φ = 48881056.

The previous prime is 61330639. The next prime is 61330693. The reversal of 61330655 is 55603316.

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

It is a cyclic number.

It is not a de Polignac number, because 61330655 - 2⁴ = 61330639 is a prime.

It is a super-2 number, since 2×61330655² = 7522898485458050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21455 + ... + 24144.

It is an arithmetic number, because the mean of its divisors is an integer number (9234000).

Almost surely, 2^61330655 is an apocalyptic number.

61330655 is a deficient number, since it is larger than the sum of its proper divisors (12541345).

61330655 is a wasteful number, since it uses less digits than its factorization.

61330655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45873.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 61330655 is about 7831.3890849580. The cubic root of 61330655 is about 394.3597061168.

It can be divided in two parts, 613 and 30655, that multiplied together give a triangular number (18791515 = T₆₁₃₀).

The spelling of 61330655 in words is "sixty-one million, three hundred thirty thousand, six hundred fifty-five".