77632201 has 4 divisors (see below), whose sum is σ = 77652432. Its totient is φ = 77611972.

The previous prime is 77632189. The next prime is 77632207. The reversal of 77632201 is 10223677.

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: 10223677 = 103 ⋅99259.

It is a cyclic number.

It is not a de Polignac number, because 77632201 - 2⁵ = 77632169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77632201.

It is not an unprimeable number, because it can be changed into a prime (77632207) 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, 2395 + ... + 12688.

It is an arithmetic number, because the mean of its divisors is an integer number (19413108).

Almost surely, 2^77632201 is an apocalyptic number.

It is an amenable number.

77632201 is a deficient number, since it is larger than the sum of its proper divisors (20231).

77632201 is a wasteful number, since it uses less digits than its factorization.

77632201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20230.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 77632201 is about 8810.9137437612. The cubic root of 77632201 is about 426.5932373500.

Adding to 77632201 its reverse (10223677), we get a palindrome (87855878).

The spelling of 77632201 in words is "seventy-seven million, six hundred thirty-two thousand, two hundred one".