61399600 has 30 divisors (see below), whose sum is σ = 147513500. Its totient is φ = 24559680.

The previous prime is 61399579. The next prime is 61399607. The reversal of 61399600 is 699316.

It is not an unprimeable number, because it can be changed into a prime (61399607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76350 + ... + 77149.

Almost surely, 2^61399600 is an apocalyptic number.

It is an amenable number.

61399600 is an abundant number, since it is smaller than the sum of its proper divisors (86113900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61399600 is a wasteful number, since it uses less digits than its factorization.

61399600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153517 (or 153506 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 61399600 is about 7835.7896857943. The cubic root of 61399600 is about 394.5074242417.

The spelling of 61399600 in words is "sixty-one million, three hundred ninety-nine thousand, six hundred".