740666751 has 16 divisors (see below), whose sum is σ = 1081153920. Its totient is φ = 447297120.

The previous prime is 740666747. The next prime is 740666753. The reversal of 740666751 is 157666047.

It is not a de Polignac number, because 740666751 - 2² = 740666747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740666753) 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, 30316 + ... + 48993.

It is an arithmetic number, because the mean of its divisors is an integer number (67572120).

Almost surely, 2^740666751 is an apocalyptic number.

740666751 is a deficient number, since it is larger than the sum of its proper divisors (340487169).

740666751 is a wasteful number, since it uses less digits than its factorization.

740666751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79606.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 740666751 is about 27215.1933853133. The cubic root of 740666751 is about 904.7757453368.

The spelling of 740666751 in words is "seven hundred forty million, six hundred sixty-six thousand, seven hundred fifty-one".