698240651 has 4 divisors (see below), whose sum is σ = 701162400. Its totient is φ = 695318904.

The previous prime is 698240617. The next prime is 698240663. The reversal of 698240651 is 156042896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 698240651 - 2²² = 694046347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 698240599 and 698240608.

It is not an unprimeable number, because it can be changed into a prime (698240681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460516 + ... + 1460993.

It is an arithmetic number, because the mean of its divisors is an integer number (175290600).

Almost surely, 2^698240651 is an apocalyptic number.

698240651 is a deficient number, since it is larger than the sum of its proper divisors (2921749).

698240651 is a wasteful number, since it uses less digits than its factorization.

698240651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921748.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 698240651 is about 26424.2436220982. The cubic root of 698240651 is about 887.1595047997.

The spelling of 698240651 in words is "six hundred ninety-eight million, two hundred forty thousand, six hundred fifty-one".