445077684 has 36 divisors (see below), whose sum is σ = 1126324836. Its totient is φ = 148192128.

The previous prime is 445077683. The next prime is 445077691. The reversal of 445077684 is 486770544.

It can be written as a sum of positive squares in 2 ways, for example, as 61779600 + 383298084 = 7860^2 + 19578^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445077683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27822 + ... + 40794.

It is an arithmetic number, because the mean of its divisors is an integer number (31286801).

Almost surely, 2^445077684 is an apocalyptic number.

It is an amenable number.

445077684 is an abundant number, since it is smaller than the sum of its proper divisors (681247152).

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

445077684 is a wasteful number, since it uses less digits than its factorization.

445077684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936 (or 13931 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 445077684 is about 21096.8643167652. The cubic root of 445077684 is about 763.5050955410.

The spelling of 445077684 in words is "four hundred forty-five million, seventy-seven thousand, six hundred eighty-four".