740406497 has 8 divisors (see below), whose sum is σ = 780232800. Its totient is φ = 700665984.

The previous prime is 740406487. The next prime is 740406523. The reversal of 740406497 is 794604047.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 740406497 - 2⁸ = 740406241 is a prime.

It is a super-2 number, since 2×740406497² = 1096403561599622018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740406437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323 + ... + 38624.

It is an arithmetic number, because the mean of its divisors is an integer number (97529100).

Almost surely, 2^740406497 is an apocalyptic number.

It is an amenable number.

740406497 is a deficient number, since it is larger than the sum of its proper divisors (39826303).

740406497 is a wasteful number, since it uses less digits than its factorization.

740406497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42895.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 740406497 is about 27210.4115551382. The cubic root of 740406497 is about 904.6697601590.

The spelling of 740406497 in words is "seven hundred forty million, four hundred six thousand, four hundred ninety-seven".