740017631 has 2 divisors, whose sum is σ = 740017632. Its totient is φ = 740017630.

The previous prime is 740017583. The next prime is 740017637. The reversal of 740017631 is 136710047.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 740017631 - 2¹⁴ = 740001247 is a prime.

It is a super-2 number, since 2×740017631² = 1095252188381704322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 740017594 and 740017603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740017637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370008815 + 370008816.

It is an arithmetic number, because the mean of its divisors is an integer number (370008816).

Almost surely, 2^740017631 is an apocalyptic number.

740017631 is a deficient number, since it is larger than the sum of its proper divisors (1).

740017631 is an equidigital number, since it uses as much as digits as its factorization.

740017631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 740017631 is about 27203.2650797657. The cubic root of 740017631 is about 904.5113530683.

Adding to 740017631 its reverse (136710047), we get a palindrome (876727678).

The spelling of 740017631 in words is "seven hundred forty million, seventeen thousand, six hundred thirty-one".