748495561 has 8 divisors (see below), whose sum is σ = 828042048. Its totient is φ = 670866000.

The previous prime is 748495543. The next prime is 748495591. The reversal of 748495561 is 165594847.

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 748495561 - 2⁵ = 748495529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748495591) 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, 478410 + ... + 479971.

It is an arithmetic number, because the mean of its divisors is an integer number (103505256).

Almost surely, 2^748495561 is an apocalyptic number.

748495561 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

748495561 is a deficient number, since it is larger than the sum of its proper divisors (79546487).

748495561 is a wasteful number, since it uses less digits than its factorization.

748495561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958463.

The product of its digits is 1209600, while the sum is 49.

The square root of 748495561 is about 27358.6469146411. The cubic root of 748495561 is about 907.9523904119.

The spelling of 748495561 in words is "seven hundred forty-eight million, four hundred ninety-five thousand, five hundred sixty-one".