3561977 has 2 divisors, whose sum is σ = 3561978. Its totient is φ = 3561976.

The previous prime is 3561947. The next prime is 3561997. The reversal of 3561977 is 7791653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2676496 + 885481 = 1636^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 3561977 - 2⁶ = 3561913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3561977.

It is not a weakly prime, because it can be changed into another prime (3561907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780988 + 1780989.

It is an arithmetic number, because the mean of its divisors is an integer number (1780989).

Almost surely, 2^3561977 is an apocalyptic number.

It is an amenable number.

3561977 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561977 is an equidigital number, since it uses as much as digits as its factorization.

3561977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 38.

The square root of 3561977 is about 1887.3200576479. The cubic root of 3561977 is about 152.7203944005.

The spelling of 3561977 in words is "three million, five hundred sixty-one thousand, nine hundred seventy-seven".