77970601 has 4 divisors (see below), whose sum is σ = 78003652. Its totient is φ = 77937552.

The previous prime is 77970569. The next prime is 77970631. The reversal of 77970601 is 10607977.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16818201 + 61152400 = 4101^2 + 7820^2 .

It is a cyclic number.

It is not a de Polignac number, because 77970601 - 2⁵ = 77970569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77970631) 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, 12690 + ... + 17803.

It is an arithmetic number, because the mean of its divisors is an integer number (19500913).

Almost surely, 2^77970601 is an apocalyptic number.

It is an amenable number.

77970601 is a deficient number, since it is larger than the sum of its proper divisors (33051).

77970601 is a wasteful number, since it uses less digits than its factorization.

77970601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33050.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 77970601 is about 8830.0963188405. The cubic root of 77970601 is about 427.2121811282.

The spelling of 77970601 in words is "seventy-seven million, nine hundred seventy thousand, six hundred one".