77650330 has 16 divisors (see below), whose sum is σ = 139905000. Its totient is φ = 31030272.

The previous prime is 77650327. The next prime is 77650393. The reversal of 77650330 is 3305677.

It can be written as a sum of positive squares in 4 ways, for example, as 66634569 + 11015761 = 8163^2 + 3319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77650292 and 77650301.

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, 9382 + ... + 15598.

Almost surely, 2^77650330 is an apocalyptic number.

77650330 is a deficient number, since it is larger than the sum of its proper divisors (62254670).

77650330 is a wasteful number, since it uses less digits than its factorization.

77650330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 77650330 is about 8811.9424646329. The cubic root of 77650330 is about 426.6264413846.

The spelling of 77650330 in words is "seventy-seven million, six hundred fifty thousand, three hundred thirty".