77130506 has 8 divisors (see below), whose sum is σ = 115776864. Its totient is φ = 38538220.

The previous prime is 77130503. The next prime is 77130509. The reversal of 77130506 is 60503177.

It is an interprime number because it is at equal distance from previous prime (77130503) and next prime (77130509).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×77130506² = 11898229911632072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77130503) 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, 9740 + ... + 15783.

It is an arithmetic number, because the mean of its divisors is an integer number (14472108).

Almost surely, 2^77130506 is an apocalyptic number.

77130506 is a deficient number, since it is larger than the sum of its proper divisors (38646358).

77130506 is a wasteful number, since it uses less digits than its factorization.

77130506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27036.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 77130506 is about 8782.3975086533. The cubic root of 77130506 is about 425.6723034030.

The spelling of 77130506 in words is "seventy-seven million, one hundred thirty thousand, five hundred six".