66402346 has 8 divisors (see below), whose sum is σ = 102295620. Its totient is φ = 32303808.

The previous prime is 66402337. The next prime is 66402353. The reversal of 66402346 is 64320466.

It can be written as a sum of positive squares in 2 ways, for example, as 53363025 + 13039321 = 7305^2 + 3611^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448591 + ... + 448738.

Almost surely, 2^66402346 is an apocalyptic number.

66402346 is a deficient number, since it is larger than the sum of its proper divisors (35893274).

66402346 is a wasteful number, since it uses less digits than its factorization.

66402346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897368.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 66402346 is about 8148.7634644773. The cubic root of 66402346 is about 404.9435393527.

The spelling of 66402346 in words is "sixty-six million, four hundred two thousand, three hundred forty-six".