753689945 has 16 divisors (see below), whose sum is σ = 922618512. Its totient is φ = 590853120.

The previous prime is 753689933. The next prime is 753689957. The reversal of 753689945 is 549986357.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (753689933) and next prime (753689957).

It can be written as a sum of positive squares in 8 ways, for example, as 1394761 + 752295184 = 1181^2 + 27428^2 .

It is not a de Polignac number, because 753689945 - 2⁸ = 753689689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348989 + ... + 351141.

It is an arithmetic number, because the mean of its divisors is an integer number (57663657).

Almost surely, 2^753689945 is an apocalyptic number.

It is an amenable number.

753689945 is a deficient number, since it is larger than the sum of its proper divisors (168928567).

753689945 is a wasteful number, since it uses less digits than its factorization.

753689945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532.

The product of its digits is 8164800, while the sum is 56.

The square root of 753689945 is about 27453.4140864119. The cubic root of 753689945 is about 910.0478761592.

The spelling of 753689945 in words is "seven hundred fifty-three million, six hundred eighty-nine thousand, nine hundred forty-five".