73977357 has 4 divisors (see below), whose sum is σ = 98636480. Its totient is φ = 49318236.

The previous prime is 73977331. The next prime is 73977367. The reversal of 73977357 is 75377937.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75377937 = 3 ⋅25125979.

It is not a de Polignac number, because 73977357 - 2²⁰ = 72928781 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 (73977307) 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, 12329557 + ... + 12329562.

It is an arithmetic number, because the mean of its divisors is an integer number (24659120).

Almost surely, 2^73977357 is an apocalyptic number.

It is an amenable number.

73977357 is a deficient number, since it is larger than the sum of its proper divisors (24659123).

73977357 is a wasteful number, since it uses less digits than its factorization.

73977357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24659122.

The product of its digits is 972405, while the sum is 48.

The square root of 73977357 is about 8601.0090687082. The cubic root of 73977357 is about 419.7908198718.

The spelling of 73977357 in words is "seventy-three million, nine hundred seventy-seven thousand, three hundred fifty-seven".