361666426 has 8 divisors (see below), whose sum is σ = 591817824. Its totient is φ = 164393820.

The previous prime is 361666423. The next prime is 361666439. The reversal of 361666426 is 624666163.

361666426 = 5729² + 5730² + ... + 5739².

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

It is a super-2 number, since 2×361666426² = 261605207391226952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (361666423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8219670 + ... + 8219713.

It is an arithmetic number, because the mean of its divisors is an integer number (73977228).

Almost surely, 2^361666426 is an apocalyptic number.

361666426 is a deficient number, since it is larger than the sum of its proper divisors (230151398).

361666426 is a wasteful number, since it uses less digits than its factorization.

361666426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16439396.

The product of its digits is 186624, while the sum is 40.

The square root of 361666426 is about 19017.5294399667. The cubic root of 361666426 is about 712.4746196356.

The spelling of 361666426 in words is "three hundred sixty-one million, six hundred sixty-six thousand, four hundred twenty-six".