77761001 has 8 divisors (see below), whose sum is σ = 78721920. Its totient is φ = 76806288.

The previous prime is 77760979. The next prime is 77761003. The reversal of 77761001 is 10016777.

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

It is a cyclic number.

It is not a de Polignac number, because 77761001 - 2²² = 73566697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77761003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26720 + ... + 29486.

It is an arithmetic number, because the mean of its divisors is an integer number (9840240).

Almost surely, 2^77761001 is an apocalyptic number.

It is an amenable number.

77761001 is a deficient number, since it is larger than the sum of its proper divisors (960919).

77761001 is a wasteful number, since it uses less digits than its factorization.

77761001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 77761001 is about 8818.2198316894. The cubic root of 77761001 is about 426.8290280383.

Adding to 77761001 its reverse (10016777), we get a palindrome (87777778).

The spelling of 77761001 in words is "seventy-seven million, seven hundred sixty-one thousand, one".