745340623 has 2 divisors, whose sum is σ = 745340624. Its totient is φ = 745340622.

The previous prime is 745340587. The next prime is 745340633. The reversal of 745340623 is 326043547.

It is a strong prime.

It is an emirp because it is prime and its reverse (326043547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745340623 - 2¹³ = 745332431 is a prime.

It is equal to p_38475403 and since 745340623 and 38475403 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745340633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372670311 + 372670312.

It is an arithmetic number, because the mean of its divisors is an integer number (372670312).

Almost surely, 2^745340623 is an apocalyptic number.

745340623 is a deficient number, since it is larger than the sum of its proper divisors (1).

745340623 is an equidigital number, since it uses as much as digits as its factorization.

745340623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 745340623 is about 27300.9271454286. The cubic root of 745340623 is about 906.6749089294.

The spelling of 745340623 in words is "seven hundred forty-five million, three hundred forty thousand, six hundred twenty-three".