746640545 has 16 divisors (see below), whose sum is σ = 1048940928. Its totient is φ = 499493760.

The previous prime is 746640539. The next prime is 746640577. The reversal of 746640545 is 545046647.

It is a happy number.

It is not a de Polignac number, because 746640545 - 2¹⁸ = 746378401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258719 + ... + 261588.

It is an arithmetic number, because the mean of its divisors is an integer number (65558808).

Almost surely, 2^746640545 is an apocalyptic number.

It is an amenable number.

746640545 is a deficient number, since it is larger than the sum of its proper divisors (302300383).

746640545 is a wasteful number, since it uses less digits than its factorization.

746640545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520360.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 746640545 is about 27324.7240608208. The cubic root of 746640545 is about 907.2017025855.

The spelling of 746640545 in words is "seven hundred forty-six million, six hundred forty thousand, five hundred forty-five".