947621 has 2 divisors, whose sum is σ = 947622. Its totient is φ = 947620.

The previous prime is 947603. The next prime is 947627. The reversal of 947621 is 126749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 112225 = 914^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 947621 - 2¹⁴ = 931237 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 947621.

It is not a weakly prime, because it can be changed into another prime (947627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473810 + 473811.

It is an arithmetic number, because the mean of its divisors is an integer number (473811).

2⁹⁴⁷⁶²¹ is an apocalyptic number.

It is an amenable number.

947621 is a deficient number, since it is larger than the sum of its proper divisors (1).

947621 is an equidigital number, since it uses as much as digits as its factorization.

947621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 947621 is about 973.4582682375. The cubic root of 947621 is about 98.2226300537. Note that the first 3 decimals are identical.

The spelling of 947621 in words is "nine hundred forty-seven thousand, six hundred twenty-one".