730656551 has 2 divisors, whose sum is σ = 730656552. Its totient is φ = 730656550.

The previous prime is 730656547. The next prime is 730656581. The reversal of 730656551 is 155656037.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 730656551 - 2² = 730656547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (730656581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365328275 + 365328276.

It is an arithmetic number, because the mean of its divisors is an integer number (365328276).

Almost surely, 2^730656551 is an apocalyptic number.

730656551 is a deficient number, since it is larger than the sum of its proper divisors (1).

730656551 is an equidigital number, since it uses as much as digits as its factorization.

730656551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 730656551 is about 27030.6594629136. The cubic root of 730656551 is about 900.6811925190.

The spelling of 730656551 in words is "seven hundred thirty million, six hundred fifty-six thousand, five hundred fifty-one".