75661346 has 4 divisors (see below), whose sum is σ = 113492022. Its totient is φ = 37830672.

The previous prime is 75661343. The next prime is 75661349. The reversal of 75661346 is 64316657.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (75661343) and next prime (75661349).

It can be written as a sum of positive squares in only one way, i.e., 75082225 + 579121 = 8665^2 + 761^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75661343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18915335 + ... + 18915338.

Almost surely, 2^75661346 is an apocalyptic number.

75661346 is a deficient number, since it is larger than the sum of its proper divisors (37830676).

75661346 is a wasteful number, since it uses less digits than its factorization.

75661346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37830675.

The product of its digits is 90720, while the sum is 38.

The square root of 75661346 is about 8698.3530625056. The cubic root of 75661346 is about 422.9522643217.

The spelling of 75661346 in words is "seventy-five million, six hundred sixty-one thousand, three hundred forty-six".