77946061 has 4 divisors (see below), whose sum is σ = 78932800. Its totient is φ = 76959324.

The previous prime is 77946053. The next prime is 77946067. The reversal of 77946061 is 16064977.

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.

It is a cyclic number.

It is not a de Polignac number, because 77946061 - 2³ = 77946053 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 (77946067) 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, 493251 + ... + 493408.

It is an arithmetic number, because the mean of its divisors is an integer number (19733200).

Almost surely, 2^77946061 is an apocalyptic number.

It is an amenable number.

77946061 is a deficient number, since it is larger than the sum of its proper divisors (986739).

77946061 is an equidigital number, since it uses as much as digits as its factorization.

77946061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986738.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 77946061 is about 8828.7066436710. The cubic root of 77946061 is about 427.1673570242.

The spelling of 77946061 in words is "seventy-seven million, nine hundred forty-six thousand, sixty-one".