661774094 has 8 divisors (see below), whose sum is σ = 992770968. Its totient is φ = 330850440.

The previous prime is 661774093. The next prime is 661774103. The reversal of 661774094 is 490477166.

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 (661774093) 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, 22364 + ... + 42704.

It is an arithmetic number, because the mean of its divisors is an integer number (124096371).

Almost surely, 2^661774094 is an apocalyptic number.

661774094 is a deficient number, since it is larger than the sum of its proper divisors (330996874).

661774094 is a wasteful number, since it uses less digits than its factorization.

661774094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36610.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 661774094 is about 25724.9702429371. The cubic root of 661774094 is about 871.4381875828.

The spelling of 661774094 in words is "six hundred sixty-one million, seven hundred seventy-four thousand, ninety-four".