76770072 has 32 divisors (see below), whose sum is σ = 213250800. Its totient is φ = 25589952.

The previous prime is 76770041. The next prime is 76770073. The reversal of 76770072 is 27007767.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76770073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177493 + ... + 177924.

Almost surely, 2^76770072 is an apocalyptic number.

76770072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

76770072 is an abundant number, since it is smaller than the sum of its proper divisors (136480728).

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

76770072 is a wasteful number, since it uses less digits than its factorization.

76770072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355432 (or 355422 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 36.

The square root of 76770072 is about 8761.8532286269. The cubic root of 76770072 is about 425.0082065313.

The spelling of 76770072 in words is "seventy-six million, seven hundred seventy thousand, seventy-two".