614473921 has 2 divisors, whose sum is σ = 614473922. Its totient is φ = 614473920.

The previous prime is 614473919. The next prime is 614473939. The reversal of 614473921 is 129374416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535459600 + 79014321 = 23140^2 + 8889^2 .

It is a cyclic number.

It is not a de Polignac number, because 614473921 - 2¹ = 614473919 is a prime.

It is a super-2 number, since 2×614473921² = 755156399178228482, which contains 22 as substring.

Together with 614473919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (614473961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307236960 + 307236961.

It is an arithmetic number, because the mean of its divisors is an integer number (307236961).

Almost surely, 2^614473921 is an apocalyptic number.

It is an amenable number.

614473921 is a deficient number, since it is larger than the sum of its proper divisors (1).

614473921 is an equidigital number, since it uses as much as digits as its factorization.

614473921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 614473921 is about 24788.5844896396. The cubic root of 614473921 is about 850.1609480692.

The spelling of 614473921 in words is "six hundred fourteen million, four hundred seventy-three thousand, nine hundred twenty-one".