61577611 has 8 divisors (see below), whose sum is σ = 62138880. Its totient is φ = 61019112.

The previous prime is 61577603. The next prime is 61577653. The reversal of 61577611 is 11677516.

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 61577611 - 2³ = 61577603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61577671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82506 + ... + 83248.

It is an arithmetic number, because the mean of its divisors is an integer number (7767360).

Almost surely, 2^61577611 is an apocalyptic number.

61577611 is a deficient number, since it is larger than the sum of its proper divisors (561269).

61577611 is a wasteful number, since it uses less digits than its factorization.

61577611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385.

The product of its digits is 8820, while the sum is 34.

The square root of 61577611 is about 7847.1403071437. The cubic root of 61577611 is about 394.8883111023. Note that the first 3 decimals are identical.

The spelling of 61577611 in words is "sixty-one million, five hundred seventy-seven thousand, six hundred eleven".