748578077 has 4 divisors (see below), whose sum is σ = 806161020. Its totient is φ = 690995136.

The previous prime is 748578029. The next prime is 748578097. The reversal of 748578077 is 770875847.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224580196 + 523997881 = 14986^2 + 22891^2 .

It is not a de Polignac number, because 748578077 - 2¹⁸ = 748315933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748578097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28791452 + ... + 28791477.

It is an arithmetic number, because the mean of its divisors is an integer number (201540255).

Almost surely, 2^748578077 is an apocalyptic number.

It is an amenable number.

748578077 is a deficient number, since it is larger than the sum of its proper divisors (57582943).

748578077 is a wasteful number, since it uses less digits than its factorization.

748578077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57582942.

The product of its (nonzero) digits is 3073280, while the sum is 53.

The square root of 748578077 is about 27360.1549154971. The cubic root of 748578077 is about 907.9857541575.

The spelling of 748578077 in words is "seven hundred forty-eight million, five hundred seventy-eight thousand, seventy-seven".