75669940 has 12 divisors (see below), whose sum is σ = 158906916. Its totient is φ = 30267968.

The previous prime is 75669929. The next prime is 75669947. The reversal of 75669940 is 4996657.

It can be written as a sum of positive squares in 2 ways, for example, as 37675044 + 37994896 = 6138^2 + 6164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75669947) 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, 1891729 + ... + 1891768.

It is an arithmetic number, because the mean of its divisors is an integer number (13242243).

Almost surely, 2^75669940 is an apocalyptic number.

It is an amenable number.

75669940 is an abundant number, since it is smaller than the sum of its proper divisors (83236976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75669940 is a wasteful number, since it uses less digits than its factorization.

75669940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783506 (or 3783504 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 75669940 is about 8698.8470500406. The cubic root of 75669940 is about 422.9682774043.

The spelling of 75669940 in words is "seventy-five million, six hundred sixty-nine thousand, nine hundred forty".