73780077 has 16 divisors (see below), whose sum is σ = 112578560. Its totient is φ = 42103152.

The previous prime is 73780061. The next prime is 73780079. The reversal of 73780077 is 77008737.

It is not a de Polignac number, because 73780077 - 2⁴ = 73780061 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 (73780079) 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, 17388 + ... + 21210.

It is an arithmetic number, because the mean of its divisors is an integer number (7036160).

Almost surely, 2^73780077 is an apocalyptic number.

It is an amenable number.

73780077 is a deficient number, since it is larger than the sum of its proper divisors (38798483).

73780077 is a wasteful number, since it uses less digits than its factorization.

73780077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752.

The product of its (nonzero) digits is 57624, while the sum is 39.

The square root of 73780077 is about 8589.5329907976. The cubic root of 73780077 is about 419.4173269423.

The spelling of 73780077 in words is "seventy-three million, seven hundred eighty thousand, seventy-seven".