77463750 has 160 divisors (see below), whose sum is σ = 239323392. Its totient is φ = 16272000.

The previous prime is 77463739. The next prime is 77463751. The reversal of 77463750 is 5736477.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 77463699 and 77463708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77463751) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 341137 + ... + 341363.

Almost surely, 2^77463750 is an apocalyptic number.

77463750 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 77463750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119661696).

77463750 is an abundant number, since it is smaller than the sum of its proper divisors (161859642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77463750 is a wasteful number, since it uses less digits than its factorization.

77463750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 39.

The square root of 77463750 is about 8801.3493283701. The cubic root of 77463750 is about 426.2844647244.

The spelling of 77463750 in words is "seventy-seven million, four hundred sixty-three thousand, seven hundred fifty".