718450690 has 16 divisors (see below), whose sum is σ = 1302517440. Its totient is φ = 285312240.

The previous prime is 718450589. The next prime is 718450703. The reversal of 718450690 is 96054817.

It is a super-2 number, since 2×718450690² = 1032342787922952200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257046 + ... + 259825.

It is an arithmetic number, because the mean of its divisors is an integer number (81407340).

Almost surely, 2^718450690 is an apocalyptic number.

718450690 is a deficient number, since it is larger than the sum of its proper divisors (584066750).

718450690 is a wasteful number, since it uses less digits than its factorization.

718450690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517017.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 718450690 is about 26803.9304953583. The cubic root of 718450690 is about 895.6376093819.

The spelling of 718450690 in words is "seven hundred eighteen million, four hundred fifty thousand, six hundred ninety".