1447664764 has 24 divisors (see below), whose sum is σ = 3118047968. Its totient is φ = 572702400.

The previous prime is 1447664761. The next prime is 1447664797. The reversal of 1447664764 is 4674667441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447664761) 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, 1988187 + ... + 1988914.

Almost surely, 2^1447664764 is an apocalyptic number.

1447664764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1447664764 is an abundant number, since it is smaller than the sum of its proper divisors (1670383204).

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

1447664764 is a wasteful number, since it uses less digits than its factorization.

1447664764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977125 (or 3977123 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 49.

The square root of 1447664764 is about 38048.1900226542. The cubic root of 1447664764 is about 1131.2432511670.

The spelling of 1447664764 in words is "one billion, four hundred forty-seven million, six hundred sixty-four thousand, seven hundred sixty-four".