61097774 has 4 divisors (see below), whose sum is σ = 91646664. Its totient is φ = 30548886.

The previous prime is 61097723. The next prime is 61097873. The reversal of 61097774 is 47779016.

61097774 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 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 as a sum of consecutive naturals, namely, 15274442 + ... + 15274445.

It is an arithmetic number, because the mean of its divisors is an integer number (22911666).

Almost surely, 2^61097774 is an apocalyptic number.

61097774 is a deficient number, since it is larger than the sum of its proper divisors (30548890).

61097774 is a wasteful number, since it uses less digits than its factorization.

61097774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30548889.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 61097774 is about 7816.5065086649. The cubic root of 61097774 is about 393.8599268454.

The spelling of 61097774 in words is "sixty-one million, ninety-seven thousand, seven hundred seventy-four".