748656731 has 4 divisors (see below), whose sum is σ = 759201264. Its totient is φ = 738112200.

The previous prime is 748656719. The next prime is 748656737. The reversal of 748656731 is 137656847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137656847 = 53 ⋅2597299.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-748656731 is a prime.

It is a super-2 number, since 2×748656731² = 1120973801743212722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748656737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5272160 + ... + 5272301.

It is an arithmetic number, because the mean of its divisors is an integer number (189800316).

Almost surely, 2^748656731 is an apocalyptic number.

748656731 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

748656731 is a deficient number, since it is larger than the sum of its proper divisors (10544533).

748656731 is a wasteful number, since it uses less digits than its factorization.

748656731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544532.

The product of its digits is 846720, while the sum is 47.

The square root of 748656731 is about 27361.5922599545. The cubic root of 748656731 is about 908.0175540960.

The spelling of 748656731 in words is "seven hundred forty-eight million, six hundred fifty-six thousand, seven hundred thirty-one".