749684157 has 16 divisors (see below), whose sum is σ = 1006938240. Its totient is φ = 496124352.

The previous prime is 749684153. The next prime is 749684171. The reversal of 749684157 is 751486947.

It is not a de Polignac number, because 749684157 - 2² = 749684153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749684153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241944 + ... + 245022.

It is an arithmetic number, because the mean of its divisors is an integer number (62933640).

Almost surely, 2^749684157 is an apocalyptic number.

It is an amenable number.

749684157 is a deficient number, since it is larger than the sum of its proper divisors (257254083).

749684157 is a wasteful number, since it uses less digits than its factorization.

749684157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652.

The product of its digits is 1693440, while the sum is 51.

The square root of 749684157 is about 27380.3607901722. The cubic root of 749684157 is about 908.4327396599.

The spelling of 749684157 in words is "seven hundred forty-nine million, six hundred eighty-four thousand, one hundred fifty-seven".