61221374 has 8 divisors (see below), whose sum is σ = 91884000. Its totient is φ = 30593376.

The previous prime is 61221371. The next prime is 61221389. The reversal of 61221374 is 47312216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61221371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659 + ... + 11654.

It is an arithmetic number, because the mean of its divisors is an integer number (11485500).

Almost surely, 2^61221374 is an apocalyptic number.

61221374 is a deficient number, since it is larger than the sum of its proper divisors (30662626).

61221374 is a wasteful number, since it uses less digits than its factorization.

61221374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314.

The product of its digits is 2016, while the sum is 26.

The square root of 61221374 is about 7824.4088594602. The cubic root of 61221374 is about 394.1253391158.

The spelling of 61221374 in words is "sixty-one million, two hundred twenty-one thousand, three hundred seventy-four".