67320077 has 4 divisors (see below), whose sum is σ = 73440096. Its totient is φ = 61200060.

The previous prime is 67320067. The next prime is 67320083. The reversal of 67320077 is 77002376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67320077 - 2⁴ = 67320061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67320047) 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, 3059993 + ... + 3060014.

It is an arithmetic number, because the mean of its divisors is an integer number (18360024).

Almost surely, 2^67320077 is an apocalyptic number.

It is an amenable number.

67320077 is a deficient number, since it is larger than the sum of its proper divisors (6120019).

67320077 is a wasteful number, since it uses less digits than its factorization.

67320077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120018.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 67320077 is about 8204.8812910365. The cubic root of 67320077 is about 406.8005530523.

The spelling of 67320077 in words is "sixty-seven million, three hundred twenty thousand, seventy-seven".