155680763 has 12 divisors (see below), whose sum is σ = 181015920. Its totient is φ = 131158416.

The previous prime is 155680757. The next prime is 155680799. The reversal of 155680763 is 367086551.

It is a de Polignac number, because none of the positive numbers 2^k-155680763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155680763.

It is not an unprimeable number, because it can be changed into a prime (155680753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21173 + ... + 27561.

It is an arithmetic number, because the mean of its divisors is an integer number (15084660).

Almost surely, 2^155680763 is an apocalyptic number.

155680763 is a deficient number, since it is larger than the sum of its proper divisors (25335157).

155680763 is an frugal number, since it uses more digits than its factorization.

155680763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514 (or 6455 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 155680763 is about 12477.2097441696. The cubic root of 155680763 is about 537.9538051758.

The spelling of 155680763 in words is "one hundred fifty-five million, six hundred eighty thousand, seven hundred sixty-three".