61267661 has 8 divisors (see below), whose sum is σ = 75406464. Its totient is φ = 48475440.

The previous prime is 61267637. The next prime is 61267667. The reversal of 61267661 is 16676216.

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

It is a de Polignac number, because none of the positive numbers 2^k-61267661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61267667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336545 + ... + 336726.

It is an arithmetic number, because the mean of its divisors is an integer number (9425808).

Almost surely, 2^61267661 is an apocalyptic number.

It is an amenable number.

61267661 is a deficient number, since it is larger than the sum of its proper divisors (14138803).

61267661 is a wasteful number, since it uses less digits than its factorization.

61267661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673291.

The product of its digits is 18144, while the sum is 35.

The square root of 61267661 is about 7827.3661598267. The cubic root of 61267661 is about 394.2246414931.

The spelling of 61267661 in words is "sixty-one million, two hundred sixty-seven thousand, six hundred sixty-one".