77653948 has 6 divisors (see below), whose sum is σ = 135894416. Its totient is φ = 38826972.

The previous prime is 77653921. The next prime is 77653963. The reversal of 77653948 is 84935677.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9706740 + ... + 9706747.

Almost surely, 2^77653948 is an apocalyptic number.

It is an amenable number.

77653948 is a deficient number, since it is larger than the sum of its proper divisors (58240468).

77653948 is a wasteful number, since it uses less digits than its factorization.

77653948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19413491 (or 19413489 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 77653948 is about 8812.1477518253. The cubic root of 77653948 is about 426.6330672869.

The spelling of 77653948 in words is "seventy-seven million, six hundred fifty-three thousand, nine hundred forty-eight".