730286905 has 8 divisors (see below), whose sum is σ = 879145992. Its totient is φ = 582361728.

The previous prime is 730286899. The next prime is 730286911. The reversal of 730286905 is 509682037.

It is an interprime number because it is at equal distance from previous prime (730286899) and next prime (730286911).

It can be written as a sum of positive squares in 4 ways, for example, as 20757136 + 709529769 = 4556^2 + 26637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 730286905 - 2³ = 730286897 is a prime.

It is a super-2 number, since 2×730286905² = 1066637927228958050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231754 + ... + 234883.

It is an arithmetic number, because the mean of its divisors is an integer number (109893249).

Almost surely, 2^730286905 is an apocalyptic number.

It is an amenable number.

730286905 is a deficient number, since it is larger than the sum of its proper divisors (148859087).

730286905 is a wasteful number, since it uses less digits than its factorization.

730286905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466955.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 730286905 is about 27023.8210658671. The cubic root of 730286905 is about 900.5292792112.

The spelling of 730286905 in words is "seven hundred thirty million, two hundred eighty-six thousand, nine hundred five".