421662670 has 32 divisors (see below), whose sum is σ = 891686880. Its totient is φ = 141536640.

The previous prime is 421662667. The next prime is 421662671. The reversal of 421662670 is 76266124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421662671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146005 + ... + 148864.

It is an arithmetic number, because the mean of its divisors is an integer number (27865215).

Almost surely, 2^421662670 is an apocalyptic number.

421662670 is an abundant number, since it is smaller than the sum of its proper divisors (470024210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421662670 is a wasteful number, since it uses less digits than its factorization.

421662670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294900.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 421662670 is about 20534.4264589981. The cubic root of 421662670 is about 749.8741536996.

The spelling of 421662670 in words is "four hundred twenty-one million, six hundred sixty-two thousand, six hundred seventy".