61222774 has 4 divisors (see below), whose sum is σ = 91834164. Its totient is φ = 30611386.

The previous prime is 61222771. The next prime is 61222781. The reversal of 61222774 is 47722216.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61222771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15305692 + ... + 15305695.

It is an arithmetic number, because the mean of its divisors is an integer number (22958541).

Almost surely, 2^61222774 is an apocalyptic number.

61222774 is a deficient number, since it is larger than the sum of its proper divisors (30611390).

61222774 is a wasteful number, since it uses less digits than its factorization.

61222774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30611389.

The product of its digits is 9408, while the sum is 31.

The square root of 61222774 is about 7824.4983225763. The cubic root of 61222774 is about 394.1283433567.

The spelling of 61222774 in words is "sixty-one million, two hundred twenty-two thousand, seven hundred seventy-four".