740673406651 has 4 divisors (see below), whose sum is σ = 740694408192. Its totient is φ = 740652405112.

The previous prime is 740673406643. The next prime is 740673406673. The reversal of 740673406651 is 156604376047.

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

It is a cyclic number.

It is not a de Polignac number, because 740673406651 - 2³ = 740673406643 is a prime.

It is a super-2 number, since 2×740673406651² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 740673406595 and 740673406604.

It is not an unprimeable number, because it can be changed into a prime (740673406051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10447780 + ... + 10518433.

It is an arithmetic number, because the mean of its divisors is an integer number (185173602048).

Almost surely, 2^740673406651 is an apocalyptic number.

740673406651 is a deficient number, since it is larger than the sum of its proper divisors (21001541).

740673406651 is a wasteful number, since it uses less digits than its factorization.

740673406651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21001540.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 740673406651 in words is "seven hundred forty billion, six hundred seventy-three million, four hundred six thousand, six hundred fifty-one".