61067667 has 4 divisors (see below), whose sum is σ = 81423560. Its totient is φ = 40711776.

The previous prime is 61067663. The next prime is 61067681. The reversal of 61067667 is 76676016.

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

It is not a de Polignac number, because 61067667 - 2² = 61067663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61067663) 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, 10177942 + ... + 10177947.

It is an arithmetic number, because the mean of its divisors is an integer number (20355890).

Almost surely, 2^61067667 is an apocalyptic number.

61067667 is a deficient number, since it is larger than the sum of its proper divisors (20355893).

61067667 is a wasteful number, since it uses less digits than its factorization.

61067667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20355892.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 61067667 is about 7814.5804110010. The cubic root of 61067667 is about 393.7952224200.

The spelling of 61067667 in words is "sixty-one million, sixty-seven thousand, six hundred sixty-seven".