67906761 has 16 divisors (see below), whose sum is σ = 99777216. Its totient is φ = 40815936.

The previous prime is 67906759. The next prime is 67906781. The reversal of 67906761 is 16760976.

It is not a de Polignac number, because 67906761 - 2¹ = 67906759 is a prime.

It is a super-2 number, since 2×67906761² = 9222656379022242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67906781) 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, 18570 + ... + 21923.

It is an arithmetic number, because the mean of its divisors is an integer number (6236076).

Almost surely, 2^67906761 is an apocalyptic number.

It is an amenable number.

67906761 is a deficient number, since it is larger than the sum of its proper divisors (31870455).

67906761 is a wasteful number, since it uses less digits than its factorization.

67906761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40552.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 67906761 is about 8240.5558671730. Note that the first 3 decimals coincide. The cubic root of 67906761 is about 407.9788712146.

The spelling of 67906761 in words is "sixty-seven million, nine hundred six thousand, seven hundred sixty-one".