77948701 has 4 divisors (see below), whose sum is σ = 79607232. Its totient is φ = 76290172.

The previous prime is 77948693. The next prime is 77948707. The reversal of 77948701 is 10784977.

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: 10784977 = 7 ⋅1540711.

It is a cyclic number.

It is not a de Polignac number, because 77948701 - 2³ = 77948693 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 (77948707) 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, 829195 + ... + 829288.

It is an arithmetic number, because the mean of its divisors is an integer number (19901808).

Almost surely, 2^77948701 is an apocalyptic number.

It is an amenable number.

77948701 is a deficient number, since it is larger than the sum of its proper divisors (1658531).

77948701 is a wasteful number, since it uses less digits than its factorization.

77948701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658530.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 77948701 is about 8828.8561546782. The cubic root of 77948701 is about 427.1721796288.

The spelling of 77948701 in words is "seventy-seven million, nine hundred forty-eight thousand, seven hundred one".