407621 has 2 divisors, whose sum is σ = 407622. Its totient is φ = 407620.

The previous prime is 407599. The next prime is 407633. The reversal of 407621 is 126704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376996 + 30625 = 614^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 407621 - 2¹⁸ = 145477 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 407593 and 407602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (407651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203810 + 203811.

It is an arithmetic number, because the mean of its divisors is an integer number (203811).

2⁴⁰⁷⁶²¹ is an apocalyptic number.

It is an amenable number.

407621 is a deficient number, since it is larger than the sum of its proper divisors (1).

407621 is an equidigital number, since it uses as much as digits as its factorization.

407621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 407621 is about 638.4520342203. The cubic root of 407621 is about 74.1456226679.

The spelling of 407621 in words is "four hundred seven thousand, six hundred twenty-one".