77693101 has 4 divisors (see below), whose sum is σ = 77712604. Its totient is φ = 77673600.

The previous prime is 77693053. The next prime is 77693107. The reversal of 77693101 is 10139677.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10139677 = 1867 ⋅5431.

It can be written as a sum of positive squares in 2 ways, for example, as 35117476 + 42575625 = 5926^2 + 6525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77693101 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 (77693107) 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, 1380 + ... + 12541.

It is an arithmetic number, because the mean of its divisors is an integer number (19428151).

Almost surely, 2^77693101 is an apocalyptic number.

It is an amenable number.

77693101 is a deficient number, since it is larger than the sum of its proper divisors (19503).

77693101 is a wasteful number, since it uses less digits than its factorization.

77693101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19502.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 77693101 is about 8814.3690074786. The cubic root of 77693101 is about 426.7047578162.

The spelling of 77693101 in words is "seventy-seven million, six hundred ninety-three thousand, one hundred one".