72699516 has 36 divisors (see below), whose sum is σ = 184353624. Its totient is φ = 24156000.

The previous prime is 72699511. The next prime is 72699521. The reversal of 72699516 is 61599627.

It is a happy number.

72699516 is a `hidden beast` number, since 72 + 69 + 9 + 516 = 666.

It is an interprime number because it is at equal distance from previous prime (72699511) and next prime (72699521).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×72699516³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72699511) 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, 8866 + ... + 14966.

It is an arithmetic number, because the mean of its divisors is an integer number (5120934).

Almost surely, 2^72699516 is an apocalyptic number.

It is an amenable number.

72699516 is an abundant number, since it is smaller than the sum of its proper divisors (111654108).

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

72699516 is a wasteful number, since it uses less digits than its factorization.

72699516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442 (or 6437 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 72699516 is about 8526.4011165321. The cubic root of 72699516 is about 417.3596951663.

The spelling of 72699516 in words is "seventy-two million, six hundred ninety-nine thousand, five hundred sixteen".