445645662 has 48 divisors (see below), whose sum is σ = 1119651456. Its totient is φ = 115750800.

The previous prime is 445645661. The next prime is 445645693. The reversal of 445645662 is 266546544.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445645661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38764 + ... + 48927.

It is an arithmetic number, because the mean of its divisors is an integer number (23326072).

Almost surely, 2^445645662 is an apocalyptic number.

445645662 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

445645662 is an abundant number, since it is smaller than the sum of its proper divisors (674005794).

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

445645662 is a wasteful number, since it uses less digits than its factorization.

445645662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87725 (or 87714 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The square root of 445645662 is about 21110.3212197257. The cubic root of 445645662 is about 763.8297353187.

The spelling of 445645662 in words is "four hundred forty-five million, six hundred forty-five thousand, six hundred sixty-two".