73777641 has 8 divisors (see below), whose sum is σ = 112423104. Its totient is φ = 42158640.

The previous prime is 73777633. The next prime is 73777657. The reversal of 73777641 is 14677737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73777641 - 2³ = 73777633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73777593 and 73777602.

It is not an unprimeable number, because it can be changed into a prime (73777601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756590 + ... + 1756631.

It is an arithmetic number, because the mean of its divisors is an integer number (14052888).

Almost surely, 2^73777641 is an apocalyptic number.

It is an amenable number.

73777641 is a deficient number, since it is larger than the sum of its proper divisors (38645463).

73777641 is a wasteful number, since it uses less digits than its factorization.

73777641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513231.

The product of its digits is 172872, while the sum is 42.

The square root of 73777641 is about 8589.3911891356. The cubic root of 73777641 is about 419.4127109182.

The spelling of 73777641 in words is "seventy-three million, seven hundred seventy-seven thousand, six hundred forty-one".