66352490 has 8 divisors (see below), whose sum is σ = 119434500. Its totient is φ = 26540992.

The previous prime is 66352471. The next prime is 66352501. The reversal of 66352490 is 9425366.

It can be written as a sum of positive squares in 2 ways, for example, as 60730849 + 5621641 = 7793^2 + 2371^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 66352490.

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, 3317615 + ... + 3317634.

Almost surely, 2^66352490 is an apocalyptic number.

66352490 is a deficient number, since it is larger than the sum of its proper divisors (53082010).

66352490 is a wasteful number, since it uses less digits than its factorization.

66352490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635256.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 66352490 is about 8145.7037756108. The cubic root of 66352490 is about 404.8421678343.

The spelling of 66352490 in words is "sixty-six million, three hundred fifty-two thousand, four hundred ninety".