748709661 has 24 divisors (see below), whose sum is σ = 1165540800. Its totient is φ = 427332528.

The previous prime is 748709659. The next prime is 748709683. The reversal of 748709661 is 166907847.

It is not a de Polignac number, because 748709661 - 2¹ = 748709659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 748709661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748709161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877311 + ... + 878163.

It is an arithmetic number, because the mean of its divisors is an integer number (48564200).

Almost surely, 2^748709661 is an apocalyptic number.

It is an amenable number.

748709661 is a deficient number, since it is larger than the sum of its proper divisors (416831139).

748709661 is an frugal number, since it uses more digits than its factorization.

748709661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 748709661 is about 27362.5594745813. The cubic root of 748709661 is about 908.0389525263.

The spelling of 748709661 in words is "seven hundred forty-eight million, seven hundred nine thousand, six hundred sixty-one".