40687604 has 6 divisors (see below), whose sum is σ = 71203314. Its totient is φ = 20343800.

The previous prime is 40687601. The next prime is 40687627. The reversal of 40687604 is 40678604.

It can be written as a sum of positive squares in only one way, i.e., 33408400 + 7279204 = 5780^2 + 2698^2 .

It is a super-2 number, since 2×40687604² = 3310962238521632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40687601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5085947 + ... + 5085954.

It is an arithmetic number, because the mean of its divisors is an integer number (11867219).

Almost surely, 2^40687604 is an apocalyptic number.

It is an amenable number.

40687604 is a deficient number, since it is larger than the sum of its proper divisors (30515710).

40687604 is a wasteful number, since it uses less digits than its factorization.

40687604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171905 (or 10171903 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 40687604 is about 6378.6835632441. The cubic root of 40687604 is about 343.9437103678.

The spelling of 40687604 in words is "forty million, six hundred eighty-seven thousand, six hundred four".