743661545 has 32 divisors (see below), whose sum is σ = 988775424. Its totient is φ = 532440000.

The previous prime is 743661517. The next prime is 743661551. The reversal of 743661545 is 545166347.

743661545 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 743661545 - 2¹² = 743657449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1421654 + ... + 1422176.

It is an arithmetic number, because the mean of its divisors is an integer number (30899232).

Almost surely, 2^743661545 is an apocalyptic number.

It is an amenable number.

743661545 is a deficient number, since it is larger than the sum of its proper divisors (245113879).

743661545 is a wasteful number, since it uses less digits than its factorization.

743661545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893.

The product of its digits is 302400, while the sum is 41.

The square root of 743661545 is about 27270.1585070568. The cubic root of 743661545 is about 905.9935548989.

The spelling of 743661545 in words is "seven hundred forty-three million, six hundred sixty-one thousand, five hundred forty-five".