611975477 has 4 divisors (see below), whose sum is σ = 612839340. Its totient is φ = 611111616.

The previous prime is 611975459. The next prime is 611975491. The reversal of 611975477 is 774579116.

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 306460036 + 305515441 = 17506^2 + 17479^2 .

It is a cyclic number.

It is not a de Polignac number, because 611975477 - 2¹⁶ = 611909941 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 (611975437) 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, 430868 + ... + 432285.

It is an arithmetic number, because the mean of its divisors is an integer number (153209835).

Almost surely, 2^611975477 is an apocalyptic number.

It is an amenable number.

611975477 is a deficient number, since it is larger than the sum of its proper divisors (863863).

611975477 is an equidigital number, since it uses as much as digits as its factorization.

611975477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863862.

The product of its digits is 370440, while the sum is 47.

The square root of 611975477 is about 24738.1381069797. The cubic root of 611975477 is about 849.0071345953.

The spelling of 611975477 in words is "six hundred eleven million, nine hundred seventy-five thousand, four hundred seventy-seven".