68546649 has 16 divisors (see below), whose sum is σ = 93405312. Its totient is φ = 44698368.

The previous prime is 68546581. The next prime is 68546651. The reversal of 68546649 is 94664586.

It is a happy number.

It is not a de Polignac number, because 68546649 - 2⁸ = 68546393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68546598 and 68546607.

It is not an unprimeable number, because it can be changed into a prime (68546449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93924 + ... + 94650.

It is an arithmetic number, because the mean of its divisors is an integer number (5837832).

Almost surely, 2^68546649 is an apocalyptic number.

It is an amenable number.

68546649 is a deficient number, since it is larger than the sum of its proper divisors (24858663).

68546649 is a wasteful number, since it uses less digits than its factorization.

68546649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376.

The product of its digits is 1244160, while the sum is 48.

The square root of 68546649 is about 8279.2903681415. The cubic root of 68546649 is about 409.2563338745.

The spelling of 68546649 in words is "sixty-eight million, five hundred forty-six thousand, six hundred forty-nine".