68699649 has 8 divisors (see below), whose sum is σ = 96420640. Its totient is φ = 43389216.

The previous prime is 68699647. The next prime is 68699693. The reversal of 68699649 is 94699686.

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

It is not a de Polignac number, because 68699649 - 2¹ = 68699647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 1205257 = 68699649 / (6 + 8 + 6 + 9 + 9 + 6 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68699647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602572 + ... + 602685.

It is an arithmetic number, because the mean of its divisors is an integer number (12052580).

Almost surely, 2^68699649 is an apocalyptic number.

It is an amenable number.

68699649 is a deficient number, since it is larger than the sum of its proper divisors (27720991).

68699649 is a wasteful number, since it uses less digits than its factorization.

68699649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205279.

The product of its digits is 5038848, while the sum is 57.

The square root of 68699649 is about 8288.5251402164. The cubic root of 68699649 is about 409.5606020385.

The spelling of 68699649 in words is "sixty-eight million, six hundred ninety-nine thousand, six hundred forty-nine".