745497973 has 16 divisors (see below), whose sum is σ = 841994496. Its totient is φ = 654186240.

The previous prime is 745497937. The next prime is 745497989. The reversal of 745497973 is 379794547.

It is a cyclic number.

It is not a de Polignac number, because 745497973 - 2¹³ = 745489781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745497173) 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, 27865 + ... + 47617.

It is an arithmetic number, because the mean of its divisors is an integer number (52624656).

Almost surely, 2^745497973 is an apocalyptic number.

745497973 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

745497973 is a deficient number, since it is larger than the sum of its proper divisors (96496523).

745497973 is a wasteful number, since it uses less digits than its factorization.

745497973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19884.

The product of its digits is 6667920, while the sum is 55.

The square root of 745497973 is about 27303.8087636139. The cubic root of 745497973 is about 906.7387076161.

The spelling of 745497973 in words is "seven hundred forty-five million, four hundred ninety-seven thousand, nine hundred seventy-three".