61397700 has 216 divisors, whose sum is σ = 221110848. Its totient is φ = 12879360.

The previous prime is 61397681. The next prime is 61397711. The reversal of 61397700 is 779316.

61397700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 354814 + ... + 354986.

Almost surely, 2^61397700 is an apocalyptic number.

61397700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61397700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110555424).

61397700 is an abundant number, since it is smaller than the sum of its proper divisors (159713148).

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

61397700 is a wasteful number, since it uses less digits than its factorization.

61397700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 61397700 is about 7835.6684462782. The cubic root of 61397700 is about 394.5033548784.

The spelling of 61397700 in words is "sixty-one million, three hundred ninety-seven thousand, seven hundred".