645270022 has 8 divisors (see below), whose sum is σ = 999127872. Its totient is φ = 312227400.

The previous prime is 645270011. The next prime is 645270049. The reversal of 645270022 is 220072546.

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

It is a congruent number.

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, 5203729 + ... + 5203852.

It is an arithmetic number, because the mean of its divisors is an integer number (124890984).

Almost surely, 2^645270022 is an apocalyptic number.

645270022 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

645270022 is a deficient number, since it is larger than the sum of its proper divisors (353857850).

645270022 is a wasteful number, since it uses less digits than its factorization.

645270022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407614.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 645270022 is about 25402.1656950741. The cubic root of 645270022 is about 864.1328126236.

The spelling of 645270022 in words is "six hundred forty-five million, two hundred seventy thousand, twenty-two".