740506738 has 4 divisors (see below), whose sum is σ = 1110760110. Its totient is φ = 370253368.

The previous prime is 740506733. The next prime is 740506751. The reversal of 740506738 is 837605047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 522442449 + 218064289 = 22857^2 + 14767^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 740506738.

It is not an unprimeable number, because it can be changed into a prime (740506733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185126683 + ... + 185126686.

Almost surely, 2^740506738 is an apocalyptic number.

740506738 is a deficient number, since it is larger than the sum of its proper divisors (370253372).

740506738 is a wasteful number, since it uses less digits than its factorization.

740506738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370253371.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 740506738 is about 27212.2534531780. The cubic root of 740506738 is about 904.7105849895.

The spelling of 740506738 in words is "seven hundred forty million, five hundred six thousand, seven hundred thirty-eight".