61897030 has 32 divisors (see below), whose sum is σ = 120655584. Its totient is φ = 22726656.

The previous prime is 61897027. The next prime is 61897091. The reversal of 61897030 is 3079816.

61897030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 23857 + ... + 26323.

It is an arithmetic number, because the mean of its divisors is an integer number (3770487).

Almost surely, 2^61897030 is an apocalyptic number.

61897030 is a deficient number, since it is larger than the sum of its proper divisors (58758554).

61897030 is a wasteful number, since it uses less digits than its factorization.

61897030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61897030 is about 7867.4665553785. The cubic root of 61897030 is about 395.5699298257.

The spelling of 61897030 in words is "sixty-one million, eight hundred ninety-seven thousand, thirty".