740656 has 40 divisors (see below), whose sum is σ = 1740960. Its totient is φ = 297984.

The previous prime is 740653. The next prime is 740659. The reversal of 740656 is 656047.

It is an interprime number because it is at equal distance from previous prime (740653) and next prime (740659).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (740651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (43524).

2⁷⁴⁰⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 740656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870480).

740656 is an abundant number, since it is smaller than the sum of its proper divisors (1000304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

740656 is a wasteful number, since it uses less digits than its factorization.

740656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 740656 is about 860.6137344942. The cubic root of 740656 is about 90.4771367619.

It can be divided in two parts, 7406 and 56, that multiplied together give a square (414736 = 644²).

The spelling of 740656 in words is "seven hundred forty thousand, six hundred fifty-six".