100977638 has 4 divisors (see below), whose sum is σ = 151466460. Its totient is φ = 50488818.

The previous prime is 100977619. The next prime is 100977649. The reversal of 100977638 is 836779001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836779001 = 31 ⋅26992871.

It is a junction number, because it is equal to n+sod(n) for n = 100977595 and 100977604.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25244408 + ... + 25244411.

It is an arithmetic number, because the mean of its divisors is an integer number (37866615).

Almost surely, 2^100977638 is an apocalyptic number.

100977638 is a deficient number, since it is larger than the sum of its proper divisors (50488822).

100977638 is an equidigital number, since it uses as much as digits as its factorization.

100977638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50488821.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 100977638 is about 10048.7630084503. The cubic root of 100977638 is about 465.6665785912. Note that the first 3 decimals are identical.

The spelling of 100977638 in words is "one hundred million, nine hundred seventy-seven thousand, six hundred thirty-eight".