745343508 has 144 divisors (see below), whose sum is σ = 2192750784. Its totient is φ = 195310080.

The previous prime is 745343449. The next prime is 745343579. The reversal of 745343508 is 805343547.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2147791 + ... + 2148137.

It is an arithmetic number, because the mean of its divisors is an integer number (15227436).

Almost surely, 2^745343508 is an apocalyptic number.

745343508 is a gapful number since it is divisible by the number (78) 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 745343508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096375392).

745343508 is an abundant number, since it is smaller than the sum of its proper divisors (1447407276).

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

745343508 is a wasteful number, since it uses less digits than its factorization.

745343508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 745343508 is about 27300.9799824109. The cubic root of 745343508 is about 906.6760787542.

Adding to 745343508 its sum of digits (39), we get a palindrome (745343547).

The spelling of 745343508 in words is "seven hundred forty-five million, three hundred forty-three thousand, five hundred eight".