662021290 has 16 divisors (see below), whose sum is σ = 1361872512. Its totient is φ = 226978704.

The previous prime is 662021287. The next prime is 662021291. The reversal of 662021290 is 92120266.

It is not an unprimeable number, because it can be changed into a prime (662021291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4728654 + ... + 4728793.

It is an arithmetic number, because the mean of its divisors is an integer number (85117032).

Almost surely, 2^662021290 is an apocalyptic number.

662021290 is an abundant number, since it is smaller than the sum of its proper divisors (699851222).

662021290 is a wasteful number, since it uses less digits than its factorization.

662021290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457461.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 662021290 is about 25729.7743868849. The cubic root of 662021290 is about 871.5466783905.

The spelling of 662021290 in words is "six hundred sixty-two million, twenty-one thousand, two hundred ninety".