745431886 has 12 divisors (see below), whose sum is σ = 1168878312. Its totient is φ = 356510396.

The previous prime is 745431877. The next prime is 745431889. The reversal of 745431886 is 688134547.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745431889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 351226 + ... + 353341.

It is an arithmetic number, because the mean of its divisors is an integer number (97406526).

Almost surely, 2^745431886 is an apocalyptic number.

745431886 is a deficient number, since it is larger than the sum of its proper divisors (423446426).

745431886 is a wasteful number, since it uses less digits than its factorization.

745431886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704615 (or 704592 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 745431886 is about 27302.5985210199. The cubic root of 745431886 is about 906.7119132612.

It can be divided in two parts, 7454 and 31886, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 745431886 in words is "seven hundred forty-five million, four hundred thirty-one thousand, eight hundred eighty-six".