745638912 has 176 divisors, whose sum is σ = 2235324000. Its totient is φ = 245514240.

The previous prime is 745638899. The next prime is 745638917. The reversal of 745638912 is 219836547.

745638912 is a `hidden beast` number, since 7 + 4 + 5 + 638 + 9 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (745638917) 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, 4119462 + ... + 4119642.

Almost surely, 2^745638912 is an apocalyptic number.

745638912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745638912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117662000).

745638912 is an abundant number, since it is smaller than the sum of its proper divisors (1489685088).

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

745638912 is a wasteful number, since it uses less digits than its factorization.

745638912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 335 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 745638912 is about 27306.3895819275. The cubic root of 745638912 is about 906.7958447239.

The spelling of 745638912 in words is "seven hundred forty-five million, six hundred thirty-eight thousand, nine hundred twelve".