61212898 has 4 divisors (see below), whose sum is σ = 91819350. Its totient is φ = 30606448.

The previous prime is 61212883. The next prime is 61212923. The reversal of 61212898 is 89821216.

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., 52374169 + 8838729 = 7237^2 + 2973^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15303223 + ... + 15303226.

Almost surely, 2^61212898 is an apocalyptic number.

61212898 is a deficient number, since it is larger than the sum of its proper divisors (30606452).

61212898 is a wasteful number, since it uses less digits than its factorization.

61212898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30606451.

The product of its digits is 13824, while the sum is 37.

The square root of 61212898 is about 7823.8672023495. The cubic root of 61212898 is about 394.1071496049.

The spelling of 61212898 in words is "sixty-one million, two hundred twelve thousand, eight hundred ninety-eight".