61897354 has 4 divisors (see below), whose sum is σ = 92846034. Its totient is φ = 30948676.

The previous prime is 61897351. The next prime is 61897373. The reversal of 61897354 is 45379816.

61897354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34492129 + 27405225 = 5873^2 + 5235^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61897354.

It is not an unprimeable number, because it can be changed into a prime (61897351) by changing a digit.

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 as a sum of consecutive naturals, namely, 15474337 + ... + 15474340.

Almost surely, 2^61897354 is an apocalyptic number.

61897354 is a deficient number, since it is larger than the sum of its proper divisors (30948680).

61897354 is a wasteful number, since it uses less digits than its factorization.

61897354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30948679.

The product of its digits is 181440, while the sum is 43.

The square root of 61897354 is about 7867.4871464782. The cubic root of 61897354 is about 395.5706200281.

The spelling of 61897354 in words is "sixty-one million, eight hundred ninety-seven thousand, three hundred fifty-four".