77261330 has 16 divisors (see below), whose sum is σ = 140422464. Its totient is φ = 30604080.

The previous prime is 77261323. The next prime is 77261341. The reversal of 77261330 is 3316277.

It is a super-2 number, since 2×77261330² = 11938626226737800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77261293 and 77261302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36476 + ... + 38535.

It is an arithmetic number, because the mean of its divisors is an integer number (8776404).

Almost surely, 2^77261330 is an apocalyptic number.

77261330 is a deficient number, since it is larger than the sum of its proper divisors (63161134).

77261330 is a wasteful number, since it uses less digits than its factorization.

77261330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75121.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 77261330 is about 8789.8424331725. The cubic root of 77261330 is about 425.9128338191.

The spelling of 77261330 in words is "seventy-seven million, two hundred sixty-one thousand, three hundred thirty".