61301649 has 8 divisors (see below), whose sum is σ = 83121120. Its totient is φ = 40174976.

The previous prime is 61301633. The next prime is 61301659. The reversal of 61301649 is 94610316.

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 61301649 - 2⁴ = 61301633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61301629) 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, 172992 + ... + 173345.

It is an arithmetic number, because the mean of its divisors is an integer number (10390140).

Almost surely, 2^61301649 is an apocalyptic number.

It is an amenable number.

61301649 is a deficient number, since it is larger than the sum of its proper divisors (21819471).

61301649 is a wasteful number, since it uses less digits than its factorization.

61301649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346399.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 61301649 is about 7829.5369594887. The cubic root of 61301649 is about 394.2975262199.

The spelling of 61301649 in words is "sixty-one million, three hundred one thousand, six hundred forty-nine".