77611490 has 16 divisors (see below), whose sum is σ = 152400960. Its totient is φ = 28222320.

The previous prime is 77611481. The next prime is 77611493. The reversal of 77611490 is 9411677.

It is a self number, because there is not a number n which added to its sum of digits gives 77611490.

It is not an unprimeable number, because it can be changed into a prime (77611493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352670 + ... + 352889.

It is an arithmetic number, because the mean of its divisors is an integer number (9525060).

Almost surely, 2^77611490 is an apocalyptic number.

77611490 is a deficient number, since it is larger than the sum of its proper divisors (74789470).

77611490 is a wasteful number, since it uses less digits than its factorization.

77611490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705577.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 77611490 is about 8809.7383616087. The cubic root of 77611490 is about 426.5552979458. Note that the first 3 decimals are identical.

The spelling of 77611490 in words is "seventy-seven million, six hundred eleven thousand, four hundred ninety".