77621067 has 12 divisors (see below), whose sum is σ = 116994384. Its totient is φ = 49497360.

The previous prime is 77621059. The next prime is 77621069. The reversal of 77621067 is 76012677.

It is not a de Polignac number, because 77621067 - 2³ = 77621059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77621069) 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, 187284 + ... + 187697.

It is an arithmetic number, because the mean of its divisors is an integer number (9749532).

Almost surely, 2^77621067 is an apocalyptic number.

77621067 is a deficient number, since it is larger than the sum of its proper divisors (39373317).

77621067 is a wasteful number, since it uses less digits than its factorization.

77621067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375010 (or 375007 counting only the distinct ones).

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

The square root of 77621067 is about 8810.2818910634. The cubic root of 77621067 is about 426.5728423930.

The spelling of 77621067 in words is "seventy-seven million, six hundred twenty-one thousand, sixty-seven".