77620671 has 12 divisors (see below), whose sum is σ = 112412040. Its totient is φ = 51611760.

The previous prime is 77620651. The next prime is 77620693. The reversal of 77620671 is 17602677.

It is not a de Polignac number, because 77620671 - 2¹¹ = 77618623 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77620651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7585 + ... + 14586.

It is an arithmetic number, because the mean of its divisors is an integer number (9367670).

Almost surely, 2^77620671 is an apocalyptic number.

77620671 is a deficient number, since it is larger than the sum of its proper divisors (34791369).

77620671 is a wasteful number, since it uses less digits than its factorization.

77620671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22566 (or 22563 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 77620671 is about 8810.2594172930. The cubic root of 77620671 is about 426.5721169751.

The spelling of 77620671 in words is "seventy-seven million, six hundred twenty thousand, six hundred seventy-one".