64350738 has 24 divisors (see below), whose sum is σ = 140996700. Its totient is φ = 21208704.

The previous prime is 64350731. The next prime is 64350787. The reversal of 64350738 is 83705346.

It is a happy number.

64350738 is a `hidden beast` number, since 643 + 5 + 0 + 7 + 3 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62678889 + 1671849 = 7917^2 + 1293^2 .

It is a super-2 number, since 2×64350738² = 8282034962289288, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64350731) 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, 18483 + ... + 21686.

Almost surely, 2^64350738 is an apocalyptic number.

64350738 is an abundant number, since it is smaller than the sum of its proper divisors (76645962).

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

64350738 is a wasteful number, since it uses less digits than its factorization.

64350738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40266 (or 40263 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 64350738 is about 8021.8911735326. The cubic root of 64350738 is about 400.7293733944.

It can be divided in two parts, 643507 and 38, that added together give a triangular number (643545 = T₁₁₃₄).

The spelling of 64350738 in words is "sixty-four million, three hundred fifty thousand, seven hundred thirty-eight".